In fairness in a 32 team league being Final 4 almost all the time, it ain't really failure. Guy is always going to have a job.
A different look at it is making the SC final twice and the Conference final 6X. Thats good on a resume.
Doboer took a NJ Devils team all the way to the final one year and lost to Kings in 6. Kings were rolling any other club that year. You look at the teams. SJ, Devils, Dallas. They are SC caliber. They're around, and one could even say they are due to coaching, but they lack any gamebreakers. Until Rantanen they never had a superstar and Rants isn't really one either. You need guns in the playoffs that can score. Every club does.
Dallas shouldn't even be in the Conference Final this year. Kind of like Carolina they just did barely enough to advance. At no point have Dallas players been confident scoring in this playoffs. The finish is abysmal on that club. The statline I mentioned doesn't like. Scoring zero goals on 80shots in first periods on 180shot attempts. Thats some shooting failure.