First off, there's no need to be rude, but given your username and lack of checking for spelling mistakes I'm pretty your porn raddled garbage bin of a brain couldn't care less about proper conduct, especially when the reply wasn't even for or about you.
Second thing, be less of a bigot, Gynesexuality isn't, another word for bisexual, they are two different things. Bisexuality is simply attraction to one's'own sex as well as their opposite. Gynesexuality is attraction to feminine presentation, regardless of the persons sex or gender. that's exactly why i was saying the MC wasn't gay, their attraction was to the feminine presentation of those femboy cosplays, and they didn't even know they were femboys!
Third, Calling Gynesexuality a 'fetish' seems like your just pathologizing something your personally uncomfortable with, because by that logic would you say that a woman that's attracted to rugged bearded men, or men with long hair, oh or maybe their attracted to men with piercings, would you say that woman has a "fetish" for them? no, nobody does, because its a preference, I'm simplifying it a bit for you so you can hopefully understand it.
now Forth thing, as for your little "a man is a man regardless of how he dresses" that's doing a lot of heavy lifting in your statement and its falling short. Gender isn't purely linked with ones biological sex, it has social and presentational dimensions, which is why gynesexuality exists as a concept in the first place. that statement also conveniently seems like a dog whistle that trans-people aren't really their identified gender post-transition implying that a trans woman is still a man no matter how she presents or identifies. your little "gotcha" just says a lot about how your views of certain people.
so maybe the next time you wanna waltz into a comment section to a porn game and butt-in into a conversation, don't drop a slur and get terminology wrong then maybe you wont sound like a mouth breathing bigot trying to sound smarter than they are
TL;DR: Gynesexuality and Bisexuality aren't interchangeable, a preference in a partners' gender presentation isn't a fetish, and maybe next time don't open with a slur you bigoted, ignorant, chronically online, parasocial, basement dweller.