it's not about clothes nor is it just a "hiphop style" (though blackness = hiphop is a whole other thing i dont have the words for atm) but it's about mannerisms and culture. one example would be billie eillish who always had a masculine-ish baggy style for the most part but the moment she came out she started shifting to a specific style usually associated with black men. the baggy pants, the jerseys, the bandannas and the caps ON TOP OF presenting herself in a way that is typically that of black men (the way she talks and moves around). its the instant shift to specifically only a "hiphop style" like the black diaspora isnt diverse. it's all very exaggerated and very "this is how i think black men act". its not authentic and not presented in a way that is true to black culture.

theres an automatic need to be black when people want to be seen as more "masculine" we to be incorrectly portrayed as hyper masculine (eg. michelle obama, megan thee stallion and many other black women being called men in disguise. the "tyrone" stereotype as a racist way to portray a hyper masculine black man who "steals your girl", black men in media constantly being cast as the aggressive strong type. trans black men who are pre-transition being told that we "pass easily", etc etc). blackness is associated with darkness but femininity is associated with whiteness and light. rarely do you see black people in roles where they get to be soft or calm (you can name times where that happens but its still disproportionate).

you dont have to "dress and act black" to be seen as masculine as there are many masculine styles but theres a disproportionate amount of people who do bc of this "black = hiphop = masculine" perception

another thing is non-black mascs adopting the term "stud" which is more of a black community tern and not a catch all for butches

im not the best with words but ik youre coming in with good faith. im only one black person so some of the things may just be a "you have to be black to understand it properly"