IMO, GMs make decisions to build teams that will lead to SC glory, rather than just RS glory. If I was GM, my players selections would be based around choosing which guys can perform in the POs and at this point, Matthews just isn’t one of those guys I would choose unless he comes at a discount OR he finally puts his big boy pants on for the POs.
To you point about his contract being worth it even if Leafs suck ass, I would agree with you. If the Leafs were in that position, PO expectations are nil and Matthews can score however many RS goals to his heart content. But, we both know that this is not the expectations for the Leafs right now. If a team is going to spend 13.5M$ for a player that is gonna perform in the POs like a 5-7M$ player, is it really in the best interest for SC glory?