Personally, I think having diversity in available relationships is fantastic, and that playersexuality is a pragmatic solution to maximising the benefit of work done on romances and giving players as much choice as possible when there are a limited number of available NPCs to romance. Certainly, there's nothing wrong in my book with having NPCs with specific sexualities, but unless it's intrinsic to their story or character in some way and/or there are lots of options, I don't see any good reason for it to be limited.
I also think it's a mistake to think of having a diverse set of relationship options as being a feature only for LGBT+ players. Personally I'm straight, but I appreciate the opportunity to roleplay characters with sexualities and genders, as well as ethics and opinions, different from my own.
And if anyone is being forced to kiss Gale in the weave scene then that is definitely a bug. Before that happens, I think there should be two options, first to say that you want to embrace any sort of intimacy at all, and then another option to select specifically a romantic (as opposed to antagonistic) intimacy.
And all of the above is entirely separate to my mind from the question of feeling that we are being harassed by our companions. It's not happened in my playthrough yet, but even if companions were aligned to my, or my character's, romantic and sexual preferences, I still wouldn't want to be pestered. And, as has been said, it feels as though there are bugs in the game that are leading companions to think some players have encouraged them when they haven't.
Oh, and I don't think everyone is doing very well at complying with my earlier request to discuss the topic of representations of sexuality in the game civilly and with sensitivity to the fact that the subject impacts on people's real lives. I'm now going to ask everyone to actively try to avoid sounding homophobic. If you don't think you can manage to discuss the topic of sexuality with respect and tolerance for everyone, then I recommend not discussing at all. I feel I've now said that enough, so no more warnings on this point.
"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"