Whenever posters like AngelAva or Christinapple engage in these discussions, usually to accuse us of being hate-filled transphobic bigots, they seem to be missing one important piece of information:
that most of us here hold two basic beliefs: human sex is binary, male or female; and it's impossible to change sex. These beliefs are based on observable scientific fact, so it's easy to explain and defend them.
Any argument, campaign, law, institution, whatever, that champions the opposite - that there are many sexes, that men can become women and vice versa, that 'gender' is more significant than biological sex - just isn't believable.
If you do not believe the basic tenets of something, you are not going to support it, and if you further think that it is doing harm, you will resist it. One of the ways of resisting it is to point out its inconsistencies, sometimes using humour.
Other ways exist of course - GC women could go around pouring soup over trans rights activists, releasing insects at TRA meetings, breaking an occasional trans jaw with a punch, that sort of thing, but on here we tend towards using factual argument and lots of humour instead.
AngelAva and Christinapple don't like that, and interpret it as bigotry or hate or transphobia. But we're just highlighting, in a range of different ways including humour, the inconsistencies that - if you bring it back to basics - are at the heart of trans ideology, and everything that flows from it.