as said there are other factors while the Islanders suck, like not being able to get quality FA, the FA the Isles attract are always 2nd and 3rd rate and the Islanders have to overpay them in order to lure them here, and fans are going to say "it is a result of Snow and the team he has built", it is a result of the Islanders essentially being a 2nd rate team and among the least desirable teams to play for, these guys especially the competitive guys who want to win want to do it it an actual hockey market where they are playing in a packed house every night, not a embarrassing arena (Barclays) or an old arena (Nassau) where they are playing in front of thousands of empty seats every night.
of course there are other factors. That's why you look at the whole body of work and the results.
Failure wears many hats on Long Island. But Garth's is the biggest-baddest-hat of them all. A super-sombrero, if you want to visualize, blocking out the sun (just like Mr. Burns wanted)
Drafting
Development
Coaching (head coach and whole staff)
Managing cap
Managing assets (player contracts and on-ice play, assessments, etc.)
UFAs
Trades
I can easily make the case that each of these are a failure, sprinkled with some successes in each case. b
But the sum-of-the-parts equals one thing - FAILURE.
And over a long period of time, way too long.
With no end in sight (I'd say it's as dire now as it was in 2008)