He has one above average hockey skill. One.
That shouldn't be understated, as that one skill may be the best release we've ever seen. But I would still very much prefer more well-rounded players. Not a good passer, not physical, not a good possession player, has literally never played defense in his life.
Take Laine off the Jets and replace him with an average top 6 winger, and they're still a contender. Take Scheifele/Wheeler off the Jets and replace them with an average player, and the team falls apart.
As for his age, if what we know about goal-scorers holds true, he's about a year away from peaking.