So, there's a lot to unpack here, with what you're remarking. I think you definitely believe you're not a lesbian for political purposes, but ultimately it should be addressed why the vast majority of radical feminists aren't heterosexual, but label themselves as either lesbians or bisexual women. Obviously, it's not a coincidence.

A woman have, at any time, with or without any certain genes (which don't even exist), leave her husband, find a girlfriend, have sex with her girlfriend, masturbate to gynophilic erotica, have her vagina open up when looking at aesthetically pleasing images of women, and draw and write about erotica featuring lesbian relationships. Is anything of this not a choice?

'She's actually bisexual, and just merely expresses herself in such a way as to appear as though she's a lesbian.'

I think the issue with this sentiment would be... well, that'd it make everyone bisexual, including asexual-identified people. The reason one's genitalia moves when looking at certain images, or having certain erotica thoughts, is because a certain, ultra-specific arrangements of things, that things are the way they are, conditionally, has been met, that it subsists in this state, causing the mind to activate movement within the genitals. Hence, why non-sexual seeming things (in relation to fetishes) turn people on, that their genitalia hardens or wets. It is not the case that anything, in all of existence, is inherently erotic, but rather that its status as erotically pleasing is socially woven, and, as a result, people react to such imagery with sexual excitement. What is, and isn't, sexual differs from culture to culture. A major example is movement and behaviour from women and feminine appearing people which society classifies as sexual, but when men and masculine appearing people do it, it's not considered sexual, not seen in such a manner.

In case you're wondering, I'm a man. A man with androphilic fantasies. Could I, if I wanted to, be a heterosexual man, gynophilic? Yes, of course I could. It's not even difficult, from a sensual perspective. But, from a logical perspective, it is extremely, extremely difficult. Because liking women, in my case, but not in everyone's case, is not logical, but illogical, it harms me psychologically. Hence, why I only masturbate to fantasies involving men, and read/watch erotica featuring male relationships. If I wanted to, I could read/watch gynophilic material, and also masturbate to female-centered fantasies. But, that's not me, for ideological reasons. Because I care about this thing called objectivity, because I know such thoughts make me feel bad, because women are already endlessly objectified (a lot of the time, against their will). Because I'm a man, and being of the male sex, desiring a population distinctly genetically different from myself just feels weird and unnatural.

If, in an alternate reality, men were the ones who were always sexualised and objectified, and never women, and I was a woman, it's possible I would've been gynophilic instead of androphilic. Currently, I live in a world where women are only ever sexualised and objectified, and I'm a man. So, it makes sense for me to be erotically interested and sexually attracted to masculine men, exclusively the male sex.

Literally any time I want, I can stop feeling things for men, quit liking them. Heck, straight women can, whenever they choose to.

A bunch of studies have found that lesbian-identified women are just as sexually turned on (measured by genital movement and eye dilation) as bisexual-identified and heterosexual-identified women by guy on guy porn, when they were test subjects watching such sexual activity. Sorry I can't find the study (I think I actually bookmarked it, but it's so far down my list of citations, I can't get it now), but if you look up similar things, you'll find it's accurate science. But, does this mean that such women were actually turned on by male on male action? It depends on the individual woman. A straight-identified woman may not like gay male porn, but a lesbian-identified woman may love it. Hence, why certain lesbians regularly watch gay male porn, or only ever watch it in terms of their erotic choices.

What I'm saying is that there's no actual genetic difference between women of any claimed sexual orientation. Straight-identified women can experience sensual movement in response to watching lesbian porn, and lesbian-identified women can feel the exact same way watching gay male porn. Likewise, it has been found, in a variety of academic studies (again, I've probably bookmarked them, but it's so far down that citations list), that straight-identified men are just as equally sexually moved, in terms of genitalia and eye dilation, as bisexual-identified and gay-identified men, when watching guy on guy pornography. But, this doesn't mean everyone who's been in these tests likes this erotic business equally.

Let's say that a woman is in the process of being raped, and though her rapist never touches her genitalia, her vagina nonetheless opens up. Does this mean she was sexually aroused? No! Absolutely not! There was zero, absolutely zero, sexual excitement derived from such an incident. She was not turned on, she was not sexually aroused or sexually attracted. She hated every moment of such torture and torment. If anything, her genitalia moving actually made far worse for her. Psychologically damaging, she was under the impression that she was 'sexually turned on,' and therefore must've somehow 'enjoyed' it. But, she didn't enjoy it. A lot of women, and a lot of men, experience genitalia movement, even when no touching has commenced, in response to incidents of sexual violence being committed against them. However, they hate this, and it instils an immense quantity of shame and guilt into them, self-hatred. The reason their genitalia did what it did was because the act being performed on them is considered sexual by society, and, therefore, subconsciously, someone's genitals move, but no sexual attraction is present whatsoever. Likewise, eye dilation occurs when someone checks out a painting, or looks at small-sized words. It's not inherently sexual, as nothing is. It doesn't, at all, imply sexual arousal. Nothing does. 'Sexual arousal' is just something society has made up.

Sexuality isn't like taste buds. I don't really like chocolate cake, because I don't tend to like sweet stuff. I'm a savoury person. But I actually have evidence for this, since taste buds objectively exist. No matter how hard I try, I can't make broccoli soup taste good. I can, however, direct my thoughts in such a way as to get, and maintain, an erection, and climax shortly afterwards as a result. This is something anyone can do.

I do apologise if some of the stuff I've mentioned about myself is rather graphic. I'm just describing in scientific terms the process of sexual arousal.