He is acting as an Nepali living in Nepal and following " Survival is the fittest" theory. You can fit with the mentality you were living abroad.
You have read it right?
The phrase 'When in Rome, Do as the Romans Do' refers to the importance of adapting yourself to the customs of the people who are in a certain place or situation and behave like they do.
I am saying is he become a pure Nepali fellow.