Apologies, I was actually referring to player characters not npc and I wouldn't really call the followers in F:NV as player characters although some might argue they are. In addition I believe it is the romance-able characters people are taking issue with - not characters like Arcade and Veronica, tons of games have had gay characters in the game world and that is nothing new. I am pretty sure DA:I had the first gay PC, and by gay I mean only gay - not romanace-able by both gender.
It doesn't bother me too much as long as there is an obvious mechanism to avoid any possible relationship whether straight or gay. I think what some people took issue with Bioware about was that the typical party in their recently games are mostly bi-sexual and it quite often gets in your face, even when they are not looking to pursue anything. For me personally, I found that in DA2 Bioware spent a lot of time on building a large number of romance options and that time should of been spent on actually making the game good and not re-using zone after zone. BG2 probably had a right balance for me, can't remember how many there were but i think it was less than 5 and they weren't very sophisticated and probably didn't take a lot of dev time - unlike the "cinematic" ones that bioware creates these days.
Have you got an example of a gay player character that is romance-able in a game apart from Dorian? I'm guessing there might be a few in jrpgs or more obscure titles but I honestly can't recall any.