Mistakes happen, it's usually what leads to a goal against.
The kids moved the puck FAST and STICK TO STICK. Uptempo hockey, like Kreider's goal, is what a lot of the people labelled as negative here are asking for. In the playoffs the kid line was the only line that moved the puck with speed and as a unit, that has fallen off a bit partly because Laffy is struggling with his decision making (something I again put on the coaches). There's a whole new generation of players like eg Mercer, Jarvis, Zegras, Hughes, Caufield who are lithe and quick and move the puck and yet none of them would look great on the Rangers the way this team is coached/managed.
In my view the coaches and the talent of this team, and the way the game is heading, are not really on the same page. It's perfectly possible to make that observation and be happy as a peach about the win at the same time, imagine that.