How are feminists responsible for trannies?
Take single-sex spaces (I'll refer to the UK, don't know about the USA). It used to be that you could run, for example, a male-only snooker club and it would be essentially legal. Nowadays, that's essentially outlawed unless you apply for certain exceptions. This is because of evolving legislation over the years culminating in the Equality Act 2010. This piece of legislation is the result of decades of feminist activism. So remember to thank feminists every time a group of women have to engage in some rhetorical gymnastics to justify excluding trannies from their spaces! Used to be that you could just tell trannies to fuck off from women's spaces and they had no legal recourse, because you had that level of freedom of association by default until feminists agitated to have it taken away from everybody.
Another area where feminists have caused absolute carnage and devastation is academia. Feminists infamously were quite antithetical towards empirical knowledge production in academia during the "Science Wars" of the 80's and 90's. Falsification and objectivity were attacked for being oppressive phallocentric masculine constructs that devalued feminine "other ways of knowing". They weren't the only ones who did this but they were enthusiastic participants. But now a lot of LGB-dropetheT rhetoric in couched in terms of facts, logic and evidence. Concepts which feminists, again, did much of the work of attacking in the past. Feminists weaponized postmodernism and now that sort of post-truth politics has been turned against them.
Similar to the above point, lots of postmodern drivel was written back in the day (and still is
https://bit.ly/3gUMedS) about how all sorts of words and concepts were offensive to women for very esoteric reasons. Such as the word "history" being problematic because it implies that history is masculine, etc (they started talking about "herstory" instead). This sort of symbolic word-policing is the same sort of behaviour as trans people obsessively complaining if an innocuous document fails to acknowledge their existence.
So trannies saying something like, "some women have penises, so your guide on women's health is offensive because it only mentions vaginas", is the same behaviour as declaring that the word history is offensive because it (allegedly) implies history is about men and not women. In the modern day it also seems like pooners are even bigger menace than MtF trannies when it comes to word policing. It's mostly pooners trying to remove the word 'woman' from existence and replace it with bleeder, etc. Pooners are true and direct inheritors of feminism here.
A good example of an old school feminist hypocrite is Julie Bindel. Bindel is regarded as based by gender crit feminists but she described herself for a long time as a "political lesbian". Essentially that she became a lesbian by choice even though she is, presumably, naturally heterosexual. This is essentially laying the foundations for so-called transbian claims later down the road. The whole genital preferences arguments goes out the window here. If Bindel can meme herself into homosexuality by hating men enough, then MTF trannies can do the same right? Why can't they be "politically" lesbian too? It's smashing cisheteropatriarchy!
And the concept of patriarchy, as it has been used in practice by many feminists, often appears to be a conspiracy theory. The notion that men are all in on a devious and hateful plot to oppress women for the fun of it, rather than women's oppression having been the historical product of material forces (including biological differences). The intemperate and intolerant behaviour of the transgenderists towards gender critical women is easily matched by the rhetoric of the likes of the late Dworkin towards men in general. The idea that men everywhere are hatefully murderous towards women was and is such a popular stance among radfems and correlates to the inflated trans-genocide rhetoric of trannies.
Dworkin was a celebrated and adored female incel. The original Supreme Gentlemen but with a vagina. It's baffling to me that at least some heterosexual women seem remotely interested in the opinions of fat ugly lesbians regarding hetererosexual relationships. I don't ask gay men for advice about women.