On the contrary - I think Fred creates "divas" by refusing to be an authoritative coach regarding lack of effort, poor attitude and not following direction. What offense do they run? I don't see any plan. The inmates run the asylum on the Bulls. Players who play zero defense still stay on the court. Fred's problem is that he is so timid.
Thibodeau didn't allow any "divas."
Just like being a supervisor, being the "nice guy" often leads to more problems. I do think he was saddled with some challenging personas though. Wade, Rondo, and Butler. But, learning how to be firm/stern/disciplinary takes time. But, an advantage Fred, and any BBall coach has for that matter, is a bench.
Butler was just as much a diva when Thibs was here. Butler ran his mouth constantly about Thibs, the only difference is, after Thibs left, Butler appreciated him more. For example:
http://nba.nbcsports.com/2015/12/29/report-jimmy-butler-was-ready-for-bulls-to-fire-tom-thibodeau/