Maybe...or maybe he just is a 3rd line player
Yes. A third line player who over 2011-15:
Scores 0.89 5v5 goals per 60 mins, avg 1st liner scores 0.84, 2nd line 0.75, 3rd 0.59.
Scores 1.85 5v5 points per 60 mins, avg 1st, 2nd, and 3rd liner goes 2.03, 1.73, and 1.42.
82nd in pts/gp for active forwards with 100+ games played (note top 90 would represent "1st line players")
51.3 Corsi percentage, avg 1st, 2nd, and 3rd liner goes 51.9, 50.7, and 49.3.
He's done this despite his main centres being:
Olli Jokinen - terrible Corsi player and 3rd line point production per minute
Mark Scheifele - was a poor Corsi player last season (better this year) and 3rd line point production per minute
Alexander Burmistrov - good Corsi player but 3rd line point production per minute
Adam Lowry - good Corsi player but 4th line point production per minute
You can like or hate Kane all you want. All the power to you.
Kane was and has not ever performed as a third line player. He's basically an elite second liner who scores goals above a first line average rate while having typically 3rd line Cs beside him.