He actually does disagree and deny that:
During his time as a defenseman with the Pittsburgh Penguins, Mike Matheson had a way with words. Especially when it came to those who had a way with words. Like his coach at that time, Mike Sullivan. “The first thing I noticed about him is just the way he speaks,”
triblive.com
My bad then........ he is dead wrong.
This team hasnt won a round since 2018.
No matter the large turn over of players every summer, his team comes out and plays the same way every season.
Who adds the current Norris trophy winner and does no improve one iota?
Every new player that comes to Sully goes on to having a their worst season. eg Karlsson, Eller, Rielly Smith, Graves, etc.
If Sullivan doesnt agree this team needs a new coach...... its completely self serving. Which is just one more good reason to show him the door.