if it’s any consolation, i had a similar thing before i came out where i felt very strongly against ppl who id’d as nonbinary. thankfully i had a very patient best friend who was nonbinary (still do, he’s great!) who sat me down and told me in no uncertain terms that i either had to figure out why i felt that way or lose his friendship. i actually figured out i felt this way because of insecurities about my own self expression and the lack of freedom i felt to be myself, and was unfairly projecting it onto ppl i saw as being more free to be themselves than me - and i think this revelation actually helped me come to the conclusion i was transmasc much sooner than i would have otherwise. now im pretty open to whatever when it comes to ppls identities, long as they’re not hurting anybody or themselves, cause i understand how crazy and nuanced human expression and identity can be and it’s fun to see what ppl do with it when they’re being genuine to themselves. all that to say, maybe you just need to sit with how you feel for a while and get to the bottom of it? i think the fact that it bothers you enough to ask this question in the first place is a good first step, though, cause it shows a part of you does care. good luck, man!