If we’re going to resort to snarky Wonka memes, we might as well be honest with ourselves.
This isn’t aimed at all trans people, obviously. Just the ones who feel entitled to being called “male” or “female” just because they’re trans. Sorry, but if you were really male or female already, you wouldn’t have anything to “transition” to. I’m not saying you couldn’t change your sex if it was actually possible (current technological advances just don’t do it), I’m just saying you can’t claim that your sex has already been changed because of your identity.
If you really believe sex =/= gender, you wouldn’t be having trouble with this concept.
Edit: And even if there were technological advancements that completely let someone change their sex, they can’t go on denying the socialization they grew up with as a child. Not all trans people do that, so if you’re one of them who does: why?