It doesn't seem they're questioning the data, they're questioning the motives of the title, and the implication that the housing should be redistributed to the

It doesn't seem they're questioning the data, they're questioning the motives of the title, and the implication that the housing should be redistributed to the homeless. I absolutely disagree with their position, but I can see their point of view. Personally, my (rough) idea would be to increase property taxes dramatically for unoccupied residences, which would encourage them to be put on the market for rental at least, and drive prices down a bit.