Comment by tom_

Why not? I expect they're already categorised to some extent - after all, how many straight men would want to read the ones where gay men are fucking each other and sucking each other's cocks and whatnot? - and this would just be an extended version of that.

(EDIT: after stepping away from the keyboard, I was struck by the question of how many men of any orientation would want to read erotic novels anyway! - when they could just load up private browsing mode and watch more videos of people doing their favourite nasty shit than they'd ever be able to muster the urge to view to completion. But my view is that the question was dumb enough as posed already without needing to think about it any more. But maybe there's more to unpack here, if anybody is so inclined, which I'm not - though I'll admit that I've instinctively taken a male perspective here, even though that was never specified. Apologies.)