Of the 125 skaters and 17 goalies who've worn a New York Islanders jersey over the last decade only one made ESPN's top 100 players of the decade list. You don't have to read the list to know that player is John Tavares (he ranked 29th on the list).
We can argue that Mathew Barzal could probably make the list. But with a sub-par year on the stats sheet in 2018-19, I can see why ESPN didn't add him.
Outside of the fringe argument for having Barzal in the list, there isn't anything, from an Islanders point of view, wrong with the list.