I'd like to know what it is that you considered "forced" diversity and how you would implement "passive" diversity in this game.
Yeah, here's the thing, Days Gone had a specific trailer that was focused on Deacon and Sarah's relationship. No one complained about it. But the E3 trailer that had Ellie and Dina dancing, OH BOY, all the complaining ensued. And I remember specifically people's defense was, "it's not because they're not straight, but because a trailer about the zombie apocalypse shouldn't focus on romance!" so oh man was that found out to be some bullshit when the Days Gone trailer dropped and no one said a word (also never mind that was half the TLOU 2 trailer, the other half was Ellie murdering fools)
And if the argument is "but TLOU 2's trailer was agenda-focused", well there's the problem. If that's how you look at it, then any lead in a non-straight relationship will ALWAYS be "agenda-focused" in your eyes unless they're shoved in the background (I remember a show, IIRC it was Modern Family, finally having its gay couple kiss after multiple seasons....in the background while the straight couple took the focus of the shot). Oh wait no, if they're in the background, then the argument becomes they're just thrown in for diversity points and could easily be removed from the story without affecting anything. The goalposts are always being moved in this regard.
LBGT characters are kept in the background.
Certain people: look, they're just thrown in for diversity points, they barely are present in the story.
LGBT characters are given certain stage.
Certain people: Oh yeah, just shove that agenda right in our faces! BOO!!!
Basically, the "certain people" are the "move it a little more to the left. No wait, it looked better on the right. Oh sorry, maybe back to the left again?" shtick in human clothing. To me it's clear they're NEVER going to be unable to find some "issue" with a LGBT character. At this point, I'd just recommend all creators of fiction to just ignore the "complaints" and do as you were. You can't please people who have made it clear they will never be content with what you're doing no matter how you approach it.