Has he really ruined his career though?
He hasn't ruined his career, but he has thrown his lot in with some not so great people. There could definitely be repercussions that effect his life in a negative manner in the not so distant future. We will have to see.
I know I don't watch his show anymore, and I used to love it. This stuff just makes me feel really sad. Every time I see him being shitty I remember the good times, when he was one of the funniest gamers on youtube. That just isn't the case anymore.
But, you know, I guess he feels really strongly about protecting white culture...