Ho  Kiddo bro , thats the point. they  do support their culture even though they dont dress up like that. they do teach their child their languages and culture.  
What about those "wanna be" from ours, they dont speak nepali bwtween nepali , they dont teach Nepali language/culture to their kids and most important they goes here are there talking about sh!t about own nation , religion and culture. I am talking against them?