100% the left did enable this happening, and will face the social / politic consequences in the short term future (or at least, I hope short term, rather than long term) there's no way around it. I think the trans rights stuff gained a foothold because of 'geek social fallacies' in the left - when it became all about inclusion for inclusion's sake rather than fighting for specific political gains. Post-gay-marriage probably, when Stonewall wanted to keep the money coming in but needed a new cause to justify seeking donations.
I don't want gay people lumped in with trans people when the backlash comes even though I know a lot of gay people - and obviously, the Stonewall organisation - have been a big part in enabling this. But equally I think lesbians like Alison Bailey were some of the earliest voices in calling it out. You can find second wave lesbians warning us about contemporary trannies back in the 70s - I forget by whom, but there's even an account out there of sexual assault / groping done by queen threw the first brick herself, Malcom / Marsha P Johnson. There's always been AGP predators among them.
Can't quote right now, idk why but re: Amholio 's point about the right having similar situations in the past -
What the original nazi party - and the people involved - really wanted was power and used an image of moral superiority over weimar's decadence as a propaganda point, but it was never that clear cut. Neonazis like to talk about the book burning of degenerate material but it was basically a publicity stunt - you look into the actual history of the transgender movement, you start seeing the doctors who were doing the chops defecting to the party, and the nazis allowing them to do so. The doctor who did both Lili Elbe's orchiectomy and uterus transplant - which of course rotted inside him and killed him from sepsis - joined the luftwaffe and then became one of the doctors conducting human endurance tests (torture) at Dachau.
Erwin Gohrbrandt. If the nazis were really against trans degeneracy, why let the doctor who basically invented the MTF sex change become a top luftwaffe doctor? because his lack of morals in performing insane surgeries wasn't something to condemn him for when it could be put to use.
And of course the Nazi party itself had Ernest Rohm - an open / public homosexual - who Hitler was perfectly happy to work with until it became bad for his public image. Hitler also saved his childhood family doctor, who was Jewish, Eduard Bloch.
It's obviously not the same, but in terms of the right, in contrast, presenting itself as condemning the trans degeneracy in the present day left - in the us republican party nobody seems to be denouncing Caitlin Jenner - not while Jenner is conveniently denouncing newer, more popular, more openly leftist trans people (Dylan etc) - and giving them money. Not while Jenner is useful. But it's been publicly known for ages that Jenner 'discovered' he was trans by stealing his daughter's (daughters'?) clothes. Jenner transitioned right after killing an old woman with his car - that timing was a publicity stunt, too. I 100% think it could have happened to the right - and seeing as the nazis did start off by calling themselves national socialists, I've always vaguely intended to look into it and see if there was a sort of 'support everyone! allow everything! if you don't you're a bigot!' rhetoric going on in the german / weimar left at the time.