I've been closely following him eversince he first got into the spotlight.
He got famous in the tech community because he's been preaching about tdd and later on clean code before it got widely accepted to be good practice.
Because of this the tech community treated him like a divine preacher and it seems like this got to him and went into his head.
His persona "Uncle Bob" is this wise and all knowing guy who has ideas way ahead of everybody else but like most people he had more misses then hits.
It seems like he's chasing "controversially big ideas" which he presents like they're truths and this can be pretty tiring to read.