This guy comes across like a sad little bitter man. Regardless of the source material, if the games sell reasonably well and more importantly the games are good, then who cares?
As a movie fan and gamer, I'm much more delighted to play a great game. Movies on the whole are utter sh*te... actors and directors will do anything for the money, and the industry pumps out films without a care for them. I guess you could say the same about games, but I'm convinced there's more passion involved and more at stake in the games industry.
I happen to like the Riddick games and movies, and although I'd never heard of The Darkness, I loved this game too. Personally I think Starbreeze are one of the better developers. Ex-employees ought to keep their pathetic mouths shut and if they feel they can do better then we, the gamers, the people who finance this industry, will decide.