Coaching shelf lives in the NHL are not very long, and I am sure there are coaches who rarely get a second crack at an NHL head job let alone a third. The only year Tocchet took a team to the playoffs was in the COVID play-in tournament that occurred in the bubble when they expanded the number of teams. Otherwise, he'd never have sniffed the playoffs in either tenure.
Does John MacLean deserve a second crack at a job?

It's a results league, for better or worse. And that's certainly why Torts, Laviolette, DeBoer and others get more kicks at the can. They get results until their shelf life expires.