Yeah, well... there's a possibility this behaviour is also gonna create resentment amongst the Players / Association. For example, if / when the Leafs can't afford to pay Kapanen and/or Johnson because Marner wants to be the 3rd $11M-man on the team, how do you think they're gonna feel about taking a deal below their value? If/when one of those guys gets traded to a shit team that has tons of cap space, how do you think they're gonna feel. Top talent is over-valuing themselves; middle talent is gonna pay that price. It's already started in principal - Dubas can't have ANY conversations with anyone (potential UFAs or his own RFAs) until Marner's contract is concluded.
One would think players are willing to balance their own self interests (ie, salary) against the interests of the team (ie, Cup potential). Marner demanding he be paid as a top-5 player in the league is not that balance. It's completely selfish. If these rumours are indeed his contract demands, and they end up putting the team back in the standings and/or ability to progress to at least the 2nd round, he's gonna go from fan-favorite, to (non-acronym) goat.