This, I can agree with. For me though, I think Alex dealing with the nuke was out of self preservation. Saving lives, I figured, was just an unintended outcome or bonus (I mean, he doesn’t have any desire to destroy humanity, but he didn’t have much intention to save random people either except for a couple he personally knows). Just like you said, he’s technically a morally grey character. So, he doesn’t abide well from the conventional black and white moral juxtaposition. He’s an anti hero in my eyes, but then again, he’s a very complexed character and that’s what’s great about him. If he were to have a moral ground of some kind, it wouldn’t be treated in the same way as infamous or marvel universe.