No,first u have to study geography. There is no bhote in mustang , only thakali. Thakali people are multi millionare , so nobody from mustang come to usa as a bhikari to ride camry like yourself n me ?

Those "bhote" ur referring which are seen in new york galli are not even nepali. They are tibetean refugee to nepal ,sheltered mostly in ekantakuna funded by usaid . These people and bhutensese refugee like to identify themself as nepali making nepali community around as large as 500K in the usa. Otherwise the real nepali community in usa is hardly 100k .
Real nepali can read and write nepali ' preeti' front while these refugee can only speak nepali. Thats how distinguish.