I hate hate hate headshots, whats the hockey play here? I think this situation opens an interesting debate.
Acciari skated in a way that made legal contact straight up impossible to perform without a big injury risk. See screenshot below, right before the contact happened. He is skating fast by the board, leading heavily with his head, FACING the board.
Dillon didnt charge or anything. He positioned himseof against the board and used his shoulder to stop Acciari's progression and separate him from the puck.
On one hand, the onus is on the defending player to recognize a dangerous situation and not apply actions with unreasonable risks.
On the other hand... in this example Acciari skated the whole neutral zone in a vulnerable position. Can an offensive player effectively remove physical play from hockey by virtue of putting themselves in a vulnerable position long enough? How long is too long?
Ie. With the way Acciari was skating, there was no way to use physical play safely to separate him from the puck. Do we still put the onus on the Jets and Dillon to only use stick checks? How far can Acciari skate in a vulnerable position and the Jets unable to touch him? Could he have gone the whole 2/3 of the ice being invulnerable to hits due to being in a vulnerable position?
Sucks to see such plays, it seems more of an unfortunate accident resulting from a hockey play than a deliberate intent to injured though.