Cute hot take but it's also misguided. You're assuming that:

a) Trans campaigning would not have been successful without the rise and success of LGB advocacy.

and that

b) LGB people should be responsible for gender ideology's rise.

Neither one is necessarily true. Trans activism could've come just as easily from religious groups pushing to promote it as a means of "curing" homosexuality as we see in Arabic countries, and the idea that we cannot differentiate between LGB and trans activism's totally different goals is simply not true.

The problems stem from allowing trans interests to piggyback on unrelated LGB advocacy. Shoulda put our foot down immediately and drawn a line.