It's great that they are involved with big names but at some point, you need to figure it out. Rantanen was whatever but Guentzel fit there perfectly and they let him walk. They always seem to be involved but they never actually pull the trigger and make tough moves.
Rantanen is evidence to the contrary. The safe play was the status quo; Necas had an extra year of control. They went for it instead. Unfortunately, he didn't want to be there and produced like it. There wasn't much of a choice but to try again later.
If you want to criticize Carolina management for something, it's the botched Guentzel negotiation. Otherwise, they recognize the problem and have tried to fix it.