If he had anything to do with the Deus Ex series, I disagree with that statement.
Best series ever made imo
EDIT: But seeing as it's an Ion Storm game before they went defunct, he probably did have something to do with it.
NOTE: I'm not saying he is terrible at what he does. On the contrary. He is one of the most brilliant minds to ever lay waste to the gaming isdustry, but his ego got the best of him.