I don't hate that guy because he should be allowed his opinion, but he does have every reason to push it as true just for the sake of taking swipes out of spite and revenge. He is the last person I would believe about this being true.
He shouldn’t have been fired for what he wrote. I thought the way Google handled that and the way it was reported in the press was pretty embarrassing. That said, no strong opinion on that anonymous letter. Seems a little hard to believe, honestly.