No, I don't think "some gay romance" is a problem. Being gay is nothing new and you can totally make believeable gay romances. I do think that "being a 2023 san francisco gay in faerun" is making the game feel less authentic, the same way as adding adding flying mindflayer vehicules doesn't make it less authentic but adding a boeing 737 would. And FWIF Gelatinous Cubes also make the game less believable.