I very much doubt he’s out of the gaming industry forever, christ what would you do after over 20 years making games? He’ll get bored in no time.
That said though I haven’t played a really decent game using the unreal engine in years, and the Gears of War series imo isn’t anything to write home about, especially when you consider the back bone of the developers succumbing to making it a one gun game at the whining of gnasher users.
I bought GoW3 after playing the beta due to them actually including the other guns. Then a few months down the line they throw all of the balance out of the window because a few whiners who can’t adapt bitched endlessly. An absolute joke.
I mean, other than GoW what else do they do? They swept UT under the rug. He probably left from sheer boredom.