If you push to take away a gay couples right for adoption, that's homophobic and political.

So what would you call people pushing to take away women's (a vulnerable group) rights to spaces free of men and male predation?

If you misgender trans folk intentionally because of your worldview you're probably a transphobe.

And if you use preferred pronouns because of your worldview and demand to take away spaces where women don't have to deal with men, you're probably a misogynist. Congrats!

early treatment gives better results overall

The problem is that with all the gender troubles and traumas that children are exposed to, especially at the start of puberty, and with the extremely toxic environment regarding the trans condition in general (society still thinking women are from Venus and men from Mars, and children having toonishly exaggerated interpretations of this [with even adult trans people pinpointing the dolls they played with or the dresses they did/didn't want to wear as evidence of being male or female], the widespread popularity of super unique trans identities, the idea that challenging anyone on this matter is literal violence, gender dysphoria no longer even being required to be trans, the reality of sexist gendering truly starting to rear its ugly head with all the associated trauma at that age), children are absolutely not qualified to decide on such medical procedures for the same reason why they're not qualified to decide on other things as well. Like, if weed helped a few children get over some issues they were having, I still wouldn't wouldn't legalise it for all minors on the basis of them saying they need it, and it doesn't matter how well the small number of them felt from that.

predators will dress as trans women to gain access to these spaces

Actually, I think regular men crossdressing just to get into toilets isn't as much of a concern as selfID allowing literally any average man to get into female spaces unchallenged. Shelters and prisons are an entirely different issue though, and the men there are known to go to any extreme and take advantage of any loophole in order to prey on women.

a cis predator wouldn't even have to try and present female to gain access to women's spaces.

Seems like something that would be fixed with the ID that stated a person's actual sex, so if any woman felt unsafe, she could get security to check. Female trans people that would make you absolutely think they're men would probably be so rare they couldn't affect what's considered normal in bathrooms. But really I don't think anyone cares where female trans people do their business, they can go gender-validate themselves in the urinals for all I care.

If you wanna argue that it's especially the trans women who pose a threat, then that would be transphobic.

Right. Women having spaces free from men and their oppression is transphobic.

If you argue for 3rd spaces you probably aren't.

Sounds like a point that the people trying to violate women's spaces should start with, not women. But people just love to insist that women should fight other people's battles first if they want their rights to be respected second. Also you'll find that the majority of GC has no issue whatsoever with 3rd spaces for trans people.

if your medical system requires social transition before access to treatment that's a different story.

I feel like parts of the trans movement are starting to be against this, but for entirely wrong reasons (mainly just to get to the drugs quicker).

Now you have male presenting people in women's bathrooms.

This is simply going to happen as more and more women are (hopefully) going to be gender nonconforming.