People rarely change their stripes unless they've changed their bank accounts.
Let's see who he's writing for NEXT.
Maybe he's been compromised.

He could also have some recent or unresolved matter in his personal life, that has turned him cold and full of agression lately.
It's easy to slip in with a bunch of neo-Nazi.....sorry, I mean "right-leaning" idealogues who see world domination at any cost, part of their personal agenda.
Maybe he just is full of himself, he wanted to jump on the bandwagon for recognistion.
Maybe his contrariness has finally caught up with him and he flipped.
To the other side, of course.