I don't care about music "tropes." The guy can't sing. Imagine Prince or Michael Jackson singing Get Lucky: it becomes an infinitely better song. Likewise, if Happy was sung by someone like John Legend (who I'm not a fan of but would do great on Happy).
He's very talented but I've always been lukeworm on his stuff. From NERD to The Clipse I thought he was criminally overrated, but it's undeniable that he has tapped into the musical conscious of the world. Of course having a major label provide early radio spins helps. There's a lot of stuff like Happy out there, sung by small soul acts. Aloe Blacc has bubbled up to the mainstream but usually those types of people don't. BTW I hate The Man, that song is bad. But I'm glad Blacc is doing well, he deserves it.