I'm really torn on that. I think you're right that he'd be ostracized in a lot of ways if he stayed at Google. On the other hand, if he had became a posterboy for "rehabilitation" and getting on board with diversity and advocating for inclusion, he could have helped drive the changes farther.
He's suing, but from what I've read, he's got a tough road ahead to win that suit. I'm not sure what he's hoping to get from the case, either a hostile work environment because of the left lean of the company - which would reinstate him at the company, or money in some way.
I think the hard thing he's going to have to deal with is looking for another job in a lot of the tech industry. I do not doubt that some right leaning sites would be willing to pick him up to do some development, but he probably wouldn't feel comfortable at a lot of companies. He wouldn't be able to get a job at Uber, because it's trying to rehabilitate it's image right now.