It has not changed the way he has played, consecutively for many years.
Hertyl, wanted him out of SJ because Kane was outperforming him , and wanting to sign an 8m x 8 contract.. which he did , after he complained about Kanes “off ice” issues to management.
Kanes off ice issues were being dealt with personally, and was not bringing them into the room..
Others saw an opponent for personal gain.
I read about, and posted all of that from San Jose media in Kanes trade thread.
im not re-visiting it.. but you are welcome to.