He has always been an ideologue more concerned with his message and his platform than actually doing something positive for this country. There was a narrow window when the two coincided and instead of building on that he got drunk on the chance he might get the nom, turning negative in the process but achieving even less after doing so.
Yeah, that sweet elixir of power will fuck your shit up if you're not focused.
Killer Mike and applause at Coachella among other things scrambled his brain.