putting my killjoy voice on:
those "surprisingly graphic, do you have something to say to the class? 🧐" responses usually don't come from a place of repressed eroticism but of overt horror
The lurid, obsessive quality comes from fear and disgust. These things aren't necessarily unrelated -- the link between horror and fetish is well-documented -- but neither are they always connected.
Getting violently dominated by a caricature of a powerful gay men is something that straight men are taught to fear as the worst thing that could possibly happen to them. It's a threat to their existence and identity. These narratives are fantasies -- detailed emotionally-charged imaginings -- but they're not erotic fantasies. They're violent fantasies, in which any and all brutality is justified self-defense against an imagined possibility. And it's those fantasies, that logic, that leads to gay and trans panic murders being legally defensible.
I get that it can be funny to take these graphic fantasies as implicit admission of desire -- certainly they're easily eroticized; take a glance at PornHub -- but I think it's shortsighted to overlook that these are basically admissions of a hate crime in waiting.