Is Al Haymon overrated?

I give Al Haymon credit for getting his fighters top dollar for weak fights, but outside of that I am not impressed with his abilities as an advisor. He over protects his fighters and doesn't help them in taking that next step to that next level. He has has three extremely talented guys that he ruined imo in Broner, Russell Jr, Quillin, and soon to be Wilder imo because he keeps stacking them against D level fights over and over again. Then when he gets them in with a B+ or higher, their lack of dvelopment gets exposed. While this hasn't happened to Quillin, at the rate heis going, it is going to happen. He has been in decline the last few fights, probably largely due to getting bored of fighting bums maybe, but if he fights one of the elite at MW, I will have to pick the other guy. They should have had him fighting against some of the guys that Martinez had beat like Macklin, Barker, Dzinziruk, etc to get him ready for the best in that class. The same with Wilder who hasn't fought anyone. I think Haymon is good for the already established/ developed top guys like Floyd. I hope the young prospects stay away from him until they have been properly established by beating top guys. If they do go to Al, I think it might be best for the fighter to actually sign to the promotional company and then have them bring the fighter along while Al just negotiates the fights or something. As much as I dislike Arum, he usually does a good job with bringing his fighters along(minus Gamboa who I thought he screwed over).