I know what you mean, pippy1958 - this board, which used to be called Feminism:Women's Rights, and is still often called 'FWR', and is now called Feminism: Sex and gender discussions, has been running for ages - I don't know how long, I'm a relative newcomer.
The discussions here follow news reports, parliamentary debates, scientific reports, etc., as they appear, and so there is an already established body of knowledge/familiar expressions. I don't know the origin of all of them, but they have become familiar to me anyway - like I know that somebody - I think it was the Natural History Museum in London - posted as a gesture of trans support about the clownfish, because clownfish change sex, therefore ...
You see? I'm not sure about the origin, but I AM NOT A CLOWNFISH still made me laugh😄
This is also a board where sex and gender are discussed, as it says in the title, and being very practically minded, grounded, factual kind of people, we operate on the basis that humans are either male or female, and you can't swap between the two.
So it's inevitable that anyone who wants to argue here that in fact there are more than two sexes, or that men can become women or vice versa, is going to be met with those awkward things: scientific facts.
It's a bit like arriving in the middle of a meeting of geographers and claiming that the earth is frisbee-shaped or something like that.. the response is going to be challenging to say the least!