if you ONLY associate "men" or "masculinity" with negative stuff, then youre not gonna be a good ally to trans masc people. while some transmascs can experience gender euphoria from being associated with the negative parts of masculinity, its not really the best way to give them that. "wow, youre really a man cause <negative male stereotype>" might be funny and stuff, but imagine telling a transfem "wow, youre really a woman cause <negative female stereotype>". while it could give someone gender euphoria but its still a product of bigotry.
if you want to be a better ally to trans men and transmascs, you should probably try to appreciate good qualities of men and masculine people in general.
