I’ll give you that the goblin ritual is sharing*, but with the werewolf, the giant, etc., even if you don’t lose the girl (full-blown NTR), you’re still getting cuckolded and forced to watch—it doesn’t matter if it’s for story purposes, it’s going to put a lot of people off.
*I think the the lore justification is kinda flimsy, however: it’s supposedly so Shakala can get sperm from many worthy males, but I find it very hard to believe that all of the random goblins in her village are strong enough for her to want to mate with them—correct me if I’m wrong, but as far as I’m aware, you’re the only one who ever proved his worth to her. I could maybe see the goblin who teaches you that sword technique as having done it, but yea.