Some of the people he quoted have valid concerns, I suppose, but I don't see how "other, more deserving people get paid way less" is his fault in any way. It's not like he gets to decide how other YouTube personalities get paid, much less doctors or teachers or firefighters or what have you. Does he do less work for way more cash? Maybe. But has he harmed people? He's made a bunch of stupid rape jokes, apparently, which doesn't make me think kindly of him (and probably makes him a poor role model for the children who watch him, assuming anyone thinks of Pewdiepie as a role model). But as a single highly paid person with questionable, possibly insensitive humour, whatever transgressions he's made pale in comparison to, oh, I don't know, Wall Street executives or war-mongering presidents or a whole host of other very rich people that we just kind of ignore (or don't even know about) because they don't have YouTube channels where they yell at games.
Even typing this message out makes me feel like I've spent too much time thinking about this. Who cares? Dude makes money. If it really is that easy, haters, do it yourself. What's keeping you from the easy millions?