There's a really good book (and a not quite so good movie) called The Art of Racing in the Rain, where a race car driver says you can't win the race in the first turn, but you can sure lose it in the first turn.
The Sabres consistently manage to lose their race to the playoffs in the first turn, by having a lousy record out of the gate. For this there's no culprit as obvious as the coaching, which doesn't have the team ready to compete when the games start counting. Granato acts like training camp is just a tryout process, and that keeps on going for 10 or 20 games. When the Sabres finally get down to business, the race is over.
There was an article in The Athletic in late 2023 about the Sabres going into one of their patented early-season swoons, where it said "It's happening. Again." And that was on the money, except it could have said "It's happened. Again."
Really the question is whether the team is willing to watch in happen again this fall.