I can’t imagine why anyone would be deliberately misled to believe Cottonwood Day School on the Navajo reservation is not very nice. Oh wait
One thing I can tell you that the whole situation up there is contentious and complicated between the tribes, the states and the feds where one could support any argument as there isn't some standard "Rez Life" one can point at.
I mean, I used to have this one friend who grew up (and still had family) on a part of the reservation which was completely surrounded by the other tribe and her and my other friends (from the other tribe, don't quite remember which was which here) would get into some serious arguments at the bar over the issue where we'd have to separate them before it came to fisticuffs.
The real world isn't TV. Not everything is a grand conspiracy.