This is what TERFs, who only pretend to be gender abolitionists for optics while going out of their way to enforce gender, don't seem to get.
They pretend that if there were no gender roles no one would transition and trans people would cease to exist.
What's more accurate is that "trans" as a category would become incoherent but people would still have preferences about their bodies and would benefit from modifying them in ways that our current world considers to be heavily gendered.
Personally, I think it would be all upsides if you did not even have to convince a medical gatekeeper that you are really a girl deep down and grew up playing with dolls and trying to wear makeup before you're allowed to have tits. You should be able to get those at your local pharmacy no questions asked.