Yeah this was my immediate impression as well. The assertion that homing every homeless person is the same as putting them up in unique per-person accommodation that ends up costing 65 billion is absurd.

All the references about Data Center water use were from one guy too.

The first one is utterly stupid.

Housing is a very complex issue that goes well beyond the sheer cost of the housing unit.

Do I think “solving homelessness” is easy with $10B? No. Does the calculation made in the answer makes any sense: absolutely not.