Everyone struggles with space in the playoffs. That's the point. At least Laine was one of the most successful skaters for the Jets on last playoffs, even while "being unlucky" with his shot (low SH% for him and highest numbers of hitting goal posts).
Some "malaise" whatever did hit him just before Vegas series (same "malaise" that forced Ehlers to miss one game before Vegas series), but he definitely managed to be TOP-4 Jet forward all the time on playoffs. He was not only fairly efficient scoring points (better than McDavid and Matthews on PO, btw.), but he was one of the best on 5-on-5 goal differential as well, so he was easily winning his game. Playing with really, really good Stastny definitely helped on that of course.
His underlying numbers -- those more advanced people think to be the reality -- were quite good for his standards.
Apart from couple of trolls, I can't see here people "blaming Little on everything". Perhaps you should finally stop making things up and beating your lovely strawmen?
Depends what you do mean "top level professional". He is already pretty darn top level, but surely getting better.