It's much more straight forward than that. Transgenderism is the new gay and people don't want to look reactionary by not getting straight on board with the new thinking.
No, I really don't think that is it. It has nothing at all to do with homosexuality; in fact, it is very homophobic. Homosexual children are being transed so their homosexuality is hidden, adult lesbians trans themselves to male to lead a seemingly hetero life.
Trans is a way for deeply sexist, misogynist, conservative people to be on the side of "progressive" for once, without having to change their opinions much.
Men still get to oppress women, even much better and easier, in this brave new world. It takes away NOTHING of male privilege.
That's why so many people jump at it. Nothing to do with regretting having hated homosexuals for nonsensical reasons. Homosexuals always just wanted the right to be themselves, and be safe as themselves.
Trans want others to pretend that they are something they aren't.
Also, it is an opportunity for cowardly women who would never dare oppose a male, to appear feminist by screaming abuse at other women, who they know, deep down, are much less likely to retaliate with violence than men.
It is pretended progress that is in fact the opposite of progress. It appeals in the same way a sugary snack that is allegedly good for your health appeals: People don't want to make an effort, but do want to get to feel virtuous.