I totally think Ardyn isn't an antagonist but just playing TEAM ARDYN so whatever gets him what he wants. Seems like the main antagonist is gonna be some sort of eldritch evil or something like that. We have been told that not all the characters have been revealed. This is another reason why when people are complaining about everything being spoiled, I kinda laugh to myself. So far we have seen edited (with plot spoilers removed) first 12 hours or so of the game, but must of that included side quests too. So yeah, I don't know what really has been spoiled. Though to be honest spoilers don't ruin things for me so I don't see the big deal anyways.

As for sexualization of Noctis, shirtless men are seen very different than shirtless women. A male nipple is a non-issue whereas a female nipple become a media sensation (Janet Jackson's Super Bowl performance). Or even the whole issue about breastfeeding in public. The issue is neither here nor there, but if we are going to mention it we should realize that how we sexualize women and their bodies is very different than how we sexualize male bodies.

Needless to say, I did appreciate a shirtless Noct, though a shirtless Gladio would be far nicer.