Beck was on top of the world. . .
until he started attacking Trump.
I agree. However, I think the downward slide started when he coined the now infamous term, “birther”, and then proceeded to ridicule his own audience with it. Not a great move.
His ridiculous demonization of Trump and Trump supporters, though, was the straw that broke the camel’s back. He did some great stuff in his “chalkboard days”, but then went off the rails, fashioning himself a modern-day Walt Disney, followed by increasingly erratic behavior. The capper was opposing his own supporters. That never works.