You know, I’ve tried writing material where the number of bisexual and gay characters present matches up with real-world demographics, but even that’s apparently enough to get folks passive-aggressively going “wow, is anyone in this setting straight?”, so basically my answer from now on is “no, not a single person in this setting is straight”.
(To be 100% clear, I’m a tabletop RPG designer, not a prose fiction author, so I’m not even talking about writing stories with gay or bisexual protagonists here – like, these are bring-your-own-protagonist scenarios. I’m just talking about setting material that has a reasonable number of gay and bisexual NPCs floating around the periphery, but even that’s a bridge too far. So screw it – no more heterosexual NPCs for you!)