My biggest problem was that after then 4th NJ goal (4-1 in the second period) they visably quit on the game. There was still plenty of time left in the game, but I saw a noticeable drop in effort in their own zone. The fans in attendance seemed to pick up on it too as the boo's started. Lack of heart this early in the season is really concerning.
While I think Eichel can and needs to do more, I'd say others are having much worse starts. O'Reilly, Risto, and Sam have been simply awful. Talk to a lot of Sabres fans and you'd think Risto was an elite top pair guy, but I just don't see it.
Also, while they have been completely screwed by their own teammates in front of them, our goaltenders are terrible.