That's how you can tell it's not about any kind of liberation, or defending the right to be gender non-conforming, but it's
all about kink and cult.
All the things that "define" their transness, all those things they consider set in stone, have at some point
not been gendered behavior, or belonged to their actual sex. Take "dress go spinny", for example.
"Oh, mom says I wanted to put on a dress when I was six!". Well, you're in luck, Chuck!
Boys wore dresses for a very long time. But it wasn't a kink, it was a practical thing, and trannies hate that sort of shit.
(And, of course, there's always the fact that pink used to be a boy's color for the longest time in the West, since red was seen as the energetic and passionate (and male) color. Boys wearing blue and girls wearing pink is a relatively recent cultural shift, historically speaking.)