It's a hog wash narrative. Those people aren't adjusting to what the stats are telling them.
Everyone here knows I pay attention to 5v5 xG as a strong indicator of success, but I never use it in a vacuum because how the total is being arrived at matters. High danger chances is a massive part of it and that has been at worst a draw and at best a slight edge to the Rangers all series at 5v5. The expectation before the series was that the Canes were going to generate significantly more high danger chances than the Rangers at 5v5, and based on the season's stats it was a reasonable and >50% expectation of happening. It simply hasn't played out like that at all. Shoulda, coulda, woulda, but not-a happenin. Sucks for them.