So far, nobody has really said why ‘Peak Trans’ is acceptable or what it means
"Peak trans" is the moment you go from being a trusting supportive ally of trans people to realising that you can't anymore, it's personal to everyone. Everyone has their own peak trans moment.
Usually it's triggered by the aggression and head fuckery that is trans activism, one example might be someone who basically realises the entire ideology is built on lies and they resent being asked to constantly say things that they know aren't true.
In the case of women who "peak trans" it's usually the moment you realise there's simply too much at stake for women and girls, to continue supporting the ideology.
The phrase exists because so many people can identify with having a "peak trans" moment and changing lanes. It's a very real phenomenon.
Unlike "peak gay" or whatever, being gay doesn't hurt anyone else. Going around being Muslim doesn't hurt anyone else. Unlike transactivism which conscientiously sets out to harm women.
You need to own it and stop complaining about throw about phrases like "peak trans", look at what you're bloody well doing.