Oh man, I've wanted to make a rant post about this for so long but I never felt like getting cremated.
Like Meatwagon, things like this are the reason why I'm not involved in any sort of 'community' that's trans-geared.
I've always had masculine endeavors and preferences and nothing changed post-T: lifting weights, woodworking, welding, building stuff, etc., are all huge hobbies of mine. I dress like I did pre-T but the clothes fit 10000x better. Apart from my unfortunate past, there's nothing female/feminine about me because that's just who I am.
Those things are apparently not favorable and not to be proudly proclaimed because doing so perpetuates 'toxic masculinity' (a phrase so overused its rapidly losing its intended poignancy), something I always thought had to do more with misogyny.
There's almost this pressure to either retain or acquire this femme edge as a transman and, if you opt out, you're too dull for the rainbow. It's bull****.
If I'd been in the same situation as you in that group, there's no way in hell I'd have stuck around either. Furthermore, what's putting on a dress really going to accomplish? Femininity isn't disgusting in the slightest--I have nothing but admiration and respect for it--but it's not who a lot of us are and it's a ridiculous requirement to remain in a group that's supposed to be helpful.
To be clear, I have absolutely no qualms with the way anyone identifies or feels (NB, femme, genderfluid, etc.) but it very much seems that it's not reciprocated for binary guys in a lot of circumstances.