It is Balkanization, or is it a recreation of remnants of the Indian caste system? Either way, it's the same system that many middle age Indian Americans were born into in India. Language is one of the major determinants of caste in Indian society today. Spanish is just another dialect of the Indian Diaspora's business empires.
Also, my company's Patel clients have all been very decent people, a pleasure to work with, with almost everyone one of their kids going on to college. The children, now in their 20's and 30's are all very Americanized, except the fat daughters. That might be a stereotype, but it's been 100% true in my experiences in NY/NJ.
"Language is one of the major determinants of caste in Indian society today."
Oh really? Do people belonging to different caste groups speak in different languages? Tell me about it.