I get that there's privacy concerns over a neighborhood owned by Google (and a government agency) but like... where did the notion that it's "constitution free"

I get that there's privacy concerns over a neighborhood owned by Google (and a government agency) but like... where did the notion that it's "constitution free" come from? If it's partially run by the government then how can that even be the case in the sense of "this is private property, so laws restricting government don't apply?" And further, privacy concerns are totally absent from the Canadian constitution as far as I can tell. This just seems like one of those issues where people lose track of telling the truth in order to push their narrative, like when Net Neutrality groups basically stated that "Google will cost $1/search if we lose Net Neutrality!"