I don't think anyone has said his game hasn't changed, just some saying he's basically finished and we should move him on.Kane has had to change his game because of all the ankle problems he has suffered over the years, i am amazed that some doubt that is what has happened. He is still a great player but you could see a couple of seasons back that he has had to adapt his game because of it.
He's our top scorer, second highest in the league and still our most creative and best player. Just because his game has changed doesn't mean he isn't as effective or as important to the team.