Tough to tell based on this season. He's played a **** ton of hockey over the last 2-3 years.
His 5v5 on ice sh% is also stupid low at 5.69%. His previous career low? 8.17%
It's amazing to look at his puck luck this year vs his career.
Sidney Crosby - Summary - Natural Stat Trick
From 2007-2013 his on ice shooting percentage never dipped below 10% (though there were some shortened seasons in there), and it's been 8.2-9.8% in the last 4 years. So it's safe to say that this year is a bit of an outlier.
That said, one thing that's helping him from completely tanking this year is that his PP puck luck is at a career high, which pulls his on ice shooting percentage in all situations up to a reasonable 10.33% (2nd worst of his career; a few years back he had only 10.25%).
He's probably owed a few extra goals from Lady luck but that's probably about it.
I expect him to maintain his level of production the next couple of years before starting to fall off a bit. Should be good for 85-95 points with average puck luck, which should keep him close to the scoring leaders. He'll probably need a "lucky" year to win the Art Ross again, but he's certainly capable of producing 105+ points if he's running hot (just look at what MacKinnon is doing!).