I can understand, coming from this world, why you guys might not like it but the setting is one with flipped gender roles, the guys being relaxed about homosexual behaviour and open to experimenting with it is a mirror to women in our world (so too for the women being overly defensive about being called gay). It is more socially acceptable for a woman to experiment with other women than it is for men to experiment with men. We have so many things to point to in support of this claim, heck, we even have a meme about spaghetti being straight until it gets wet. It's debatable if bisexuality is more common in women than men but given how our social groups differ in their response to either gender it's not hard to imagine things being flipped in this game's universe, nor is it surprising why some of you would have a distaste for it.