This. Whether or not you consider "the skeptical movement" to be a thing, or worth supporting, or whatever, the damage he did to it with this stunt will be far-reaching and pervasive. It's yet another concrete example of "skepticism/atheism is just an excuse for people to be selfish and greedy" coming at very much the wrong time.
The best thing "the community", whatever it is, can do at this point is to bury Dunning in the yard out back and treat him as a piece of history. Reference his work as necessary, but only for the facts it contained, not the work itself.