there are plenty of whites near the poverty line in many red states...so he's speaking to them as well, whether they realize it or not...so if he does well in NYC shrinking the wealth gap, that will definitely resonate throughout the country. Also, since the U.S. is forecasted to have a non-white majority by ~2045, it won't be long before even more folks will get behind that platform...IF he delivers in NYC. Based on current performance the end of MAGA is in sight, and there's a deep fissure in the GOP that depends on political and physical intimidation to get anything done...that cannot and will not last.
As for Asians, et al...given my experiences in Silicon Valley, some of the very best businesses I've ever dealt with have been Asian owned...our go-to car repair shop has been the best I could ever imagine and they are 2nd generation Vietnamese...never have to question anything they do, or what they charge...always done with the highest quality, on time, and no "Up Selling" on things not needed. They've totally assimilated...close your eyes and you don't know what race they are...just hard working Americans. I feel sorry for the luddites who turn their backs on anyone who isn't White, Straight or Christian.