The utilitarian aspect on this is that the millions of dollars and thousands of man hours - all the human energy that are going into the coverage of this case and the possible additonal millions spent on indefinite life support could all be used to provide definite, statistically assured life to vast numbers of other perfectly healthy people, many of them children with their whole lives ahea of them.
I've had the related criticism against JW's for wasting millions of dollars on tracts about HIV's coming end in the la-la-land of the new system, when they could spend the millions on HIV treatment, prevention, and research. They cut down thousands of trees and run energy consuming printing operations - hauling around the country in SUV's, vans and huge cars, all so they can distribute stuperous magazines on the environment. Disgusting.
From a moral standpoint, her husband is in the best situation to know what she would have wanted. I hold him morally responsible for the decision.