Actually there is zero proof of this. It could just as easily him going to the team and telling them he doesn't want to talk right now and the team making that happen.
Any other statement than, he isn't talking to the media, is 100% pure speculation at this point.
https://ca.sports.yahoo.com/news/predators-hide-p-k-subban-game-6-171626782.html
He was heard asking of he could talk to reporters, team spokesman said pk will not be talking to the media.
Not speculation.