Yes it’s true, the role of a Producer is really to make sure the production of the game is on track while assisting in Quality Assurance. Bottom line is that having a Producer who is not a hardcore gamer, improves upon the chance that the game will be playable by casual gamers. If the casual Producer does his/her job the game should be much easier to play and accessible to all then if a hardcore Producer oversaw the project. This inreturn means the game can reach more market share AKA more money.