Trans men/transmascs shouldn't have to change every bit about their mannerisms, speech and clothing just to be taken seriously. You can and should respect someone's manhood regardless of all the superficialities. I'm not specifically talking about feminine transmascs (tho they're still heavily included in this), but just those ones who aren't always able to go 100% into the transition, socially or otherwise. Who still own their "girl" clothes and can't just change out their entire wardrobe just like that. Or hair. And who still feel like and want to be masculine men (/enbies).
It's just deeply depressing to me personally when, I'm feeling dysphoric and try to look for passing tips and then reading them I realize that gender really is an entire fucking performance and I'd basically have to become another person. And it depresses me bc I don't want to change that drastically, I already feel like my gender is valid, I just want others to see it that way too, regardless of how I am. I like bright colors, being extremely emotional and sweet, skirts and dresses (occasionally), and well, all my mannerisms and such. But no, that's not manly enough in the eyes of the cishet society. Even though loads of cis men have these traits, trans men aren't valid with them. And don't even get me started on body types..
Personal grudges aside, feminine transmascs, neutral transmascs, transmascs who can't or don't want to change their mannerisms, walking style, voice, clothing, or anything just to have their masculinity taken seriously? They're valid and deserve so much more.