Transandrophobia goes beyond just being dismissive of trans men, it's this culture within the queer community where transmasc and afab enby experiences and culture are regularly hated and dismissed by the rest of the community. As well as the way any hint of female sex on someone who isn't a woman is hated. Not to mention the insane amount of transphobia + homophobia trans mlm face within the queer community.
Like just look at how every fandom (lemon demon, fnaf, TallyHall, Undertale, backrooms, etc.) gets hated and mocked by the internet the momment the fandom becomes majority afab trans people. I've seen this happen in real time, where fandoms go from being seen as cool and interesting, to being dismissed as weird and cringe, the momment thos shift happens.
Or the way transmasc and afab enby bodies are treated. The way transmascs are bullied for not having body types considered masculine. The searing hatred most people here seem to have for any afab trans person who isn't on T. The way passing is celebrated as a moral good. The way twink has been a polite way for some people to call trans men girls.
Transmascs and afab enbies deserve love and kindness. And they also deserve human respect. Please if your an afab trans person reading this: I love you, I respect you, you deserve to be respected, and treated as an adult able to make your own decisions, you deserve to have your body treated with respect regardless of appearance and for people to be normal about it.