I would agree if the head coach had any HC experience. But since he doesn't, having a it on the staff seems important.Why? Ben probably could have kept Conroy and chose another route. He wasn’t successful as a head coach, and has done nothing notable as an asst here. All that’s important is that Ben get a team he can work with, and sees working well together. The whole previous head coaching experience for one of the assistants is so overrated. If they were a great head coach who should be a mentor, they would probably still be coaching unless they have stepped away from that at this stage of their career - very, very few of those.
If you want to argue that Thorson's experience is better than Conroy's I can buy that argument. But I'd rather have had both Thorson and Mo/Conroy/other veteran coach.