Not that I'm a proponent of political lesbianism, but I must point out that political lesbianism is totally different to what's described in the OP.

The feminists who advocate political lesbianism do so amongst feminist women. Their view is that other feminist women should stop sleeping and life-partnering with men, and ally with women instead. This is something that some members of an oppressed group think other members of the same oppressed group who share a worldview should do together for the benefit of the group as a whole and the women in it. AFAIK, feminists who advocate political lesbianism are not suggesting it for all women, just for feminist women - and they're certainly not trying to get the opposite sex involved in political lesbianism.

The OP is about some males using QT and their special "gender identity" status to try to shame, guilt and coerce lesbians to have sex with them - and some females using the same rationale and similar methods to try to pressure gay men to have with them. These people are doing this for their own selfish aims. Those aims are to get their own individual sexual pleasure, to have their personal identities "validated" - aka for narcissistic supply - and to get the thrill of getting others to bend to their authoritarian will.

The women who espouse political lesbianism for feminist women say it will benefit the women who engage in it, advance feminism and advance women's rights and interests generally. Are QT people who are trying to trample the sex boundaries of lesbians and gay men saying that having sex with people they don't want to have sex with, and who are of the sex they are not attracted to, will be of benefit to lesbians and gay men personally and politically? I realize that they're probably using tired old lines likes, "Try it, you'll like it" and "Broadening your horizons will be good for you." But are they also saying that a good way to advance lesbian and gay rights and gay liberation is for same-sex attracted people to have sex with the opposite sex? That the best things gays and lesbians can do to further greater acceptance of and justice for homosexual people is to have heterosex?