Presumably then, you would have preferred him to spend loads of money neither he nor the club had?
Murray was guilty of not being a billionaire, but, for nigh on twenty years he was the only show in town. No serious individual showed any interest in us back then. If he'd gave in, we'd be a club, but a greatly reduced one. He was, as are we all, imperfect, but he did more for Sunderland than any living individual.
Easy to spend shedloads and look good for a while. Ask Leeds back then, ( even now I'm not sure if they own their training ground and stadium after their wild splurge), or Sheffield Wednesday who bet the future on going up and ended up going down with a bigger wage bill than CL finalists Borussia Dortmund.