it shows their absolutely vile views on womenhood as a whole and also their views on specifically trans women.
on women in general, it shows that they think misogyny is deserved, natural even, so much so that it is the default way that all people interact with women. if you exist as a woman, at any possible moment, you can and should be subject to misogyny, and thats normal.
on trans women specifically, it shows they don't actually see us as women. they think we aren't subjected to misogyny on a daily basis. they think we dont experience this behavior already, when it's not as they refer to as a "joke". they think that like themselves, no one in the world could possibly see us as actual women.
therefore, when we are subjected to misogyny, it should be "affirming". its someone briefly winking and nodding at us, saying "ill pretend you're a woman, get back in the kitchen and make me a sandwich". its the belief that they're doing us a favor, that they're being trans positive, even. they think its the same as calling us pretty. after all, they're momentarily treating us the same way they treat every other women.
the worst part is that they're partially right. it can actually feel slightly gender affirming the first time a stranger says your tits look great. but its not as fun the second time. or the third. or the 50th. or the 1000th. they are right, i would rather be called a cunt or a bitch rather than a tranny or an autogynophile. but id much rather not be called any of that. it can feel nice the first time a man hits on you because he finds you attractive (aka fresh meat), instead of hitting you for not being man enough. it gets old real quick having to cover my drink around literally everyone.
people think trans women aren't subjected to misogyny, and that they can be gender affirming by being misogynistic, something that comes so naturally to them that they already do it to all women. but they don't realize that trans women experience transmisogyny - that we suffer through every single thing a cis woman suffers through on a daily basis, and worse on top of that for daring to exist at all.