When you see all those Producer credits what you’re really seeing are the Writers. It’s common in TV production for many of the writers to receive Producer or Co-Producer credits, it’s all about compensation. The BS credit is often Executive Producer, many of those credited that way have little to do with actually making the show. Often they may have had a part in the development of the project, and having the EP credit insures they receive a piece of the pie in perpetuity if it succeeds. It’s quite common for the Director of a TV Pilot episode to also get a Producer credit. Should the show get picked up and succeed, that Director then receives residuals forever, even if they never have anything else to do with the show, sweet deal.