Points 1-7:- NO, absolute garbage!
if your friend of a friend was a paranoid little twerp, those points would still not be true.
Some people fit in, others don't.
The EK psych profiling is fairly accurate, but those are of the pilot only, not of his family. So far, they seem quite accurate in getting people who are able to make a good go of it. Those who bail out early tend to have problems at home (happy wife=happy life), rather than with EK or Dubai.