Prove what wrong? You haven't proven anything in the first place. Your entire argument centers around your personal belief that goalies can't be individually evaluated without evaluating shooting talent and shot quality, which aside from being wrong, blatantly ignores that goalie statistics exist that do include shooting talent and shot quality. And your response to that is to just arbitrarily dismiss those measures of shooter and shot quality, based on nothing.
The simple fact is, there are many valuable goalie statistics out there, that do a good job isolating their individual play, including ones that consider the shooter and quality of chances against. Whatever limitations you wish to wildly exaggerate, it doesn't change the fact that every single one is better than win-loss record. Toronto will survive Hutchinson playing a few games due to Mrazek's injury.
I'm not even sure what you're attempting to argue anymore. If you're suggesting that there is no way to evaluate a goaltender's individual play, you have no basis with which to conclude that Hutchinson is a bad 3rd string goalie.