Probably because it has absolutely nothing to do with that. It's the same people posting the same ludicrous derisions towards the people they hate in this organization, regardless of the circumstances. Melnyk was the easy target when he was alive and now it's Dorion and DJ. They'll argue in circles to blame Dorion because he's "dumb" or "incompetent" or "malicious" or whatever, because that's their preferred explanation and it makes them feel good for some reason.
More importantly, and factually, Bowness is the GM of Belleville, and making changes to the coaching staff would fall under his responsibilities.