"Guess I'll just be taking my hundred million dollar early retirement bonus and head out, your problem now kthxbai"
He didn't step down, he was fired.
He is the head SJW at Blizzard, if he left he would of made his own statement. When the company makes a statement on your behalf they fired you. They said "he is leaving to pursue other opportunities"
Also, sadly most humans learn to live to the standard of life they get used to. A person earning a million dollars a year and getting a payout of 2-3M, is not going to be set for life. They need to find another job earning similar.
This is why film stars work forever, even after getting paid $50m dollars for 6 months work on a movie.