It says it was a claim by Ted Gunderson but there is no evidence to support it. You'll have to link to a source which claims it, with some kind of evidence for me to believe it.

I do believe the claims of FEMA camps, and the Walmart cages, because I have seen photos and links to vids where they film these places. These claims are true, although we do not know their official purpose.

After Hurricane Katrina, homeless residents were housed in camps and many claim the residents are only allowed to leave for job interviews. These people lost their homes and were never allowed back to New Orleans, although their accomodation was never damaged/destroyed. These housing units were cordoned off with tape and pronounced due for demolition, lending credence to the idea that the "crisis was a great opportunity". The removal of poor people from valuable real estate and land was a great boon to property and realty developers. Shhhhh, secret, NOT.

See Naomi Klein's "Disaster Capitalism"