I can speak as someone of South and Central Asian descent though. There are options for that in NYC, but I'd need to commute over an hour to New Jersey, Midwood, or Brighton Beach. Meanwhile I can get Aush or Charsi Kebab within at most a 40 minute BART ride from SF, and have 4-5 different options.
If I want to get HK Cha Chaan Teng style Yu Char Kway I have like 8-9 options within 3 miles of me within SF, or if I want to try some cool Thai Chinese style crepes there are 4 options in SF alone.
If I ever want to find a specific Asian sub-ethnic group's food - I will always find 3-4 options for that in the Bay Area, but it's difficult even in NYC
Furthermore, Asian and Latino culture is extremely normalized in California compared to NY. The same way a New Yorker is a fanatic for an Italian sub is the same way a Californian is for their Banh Mi
And finally, it's hard to discount the representation all over California. In the east coast you will feel like the other - people absolutely do look at you weird if you ain't white or black - but in the West no one bats an eye.
Basically, imagine if you were an Italian New Yorker. Italians have been well represented politically, culturally, and socially. You're basically the top dog. In NYC you can try every single type of ethnic Italian cuisine at every single price point. For Asian ethnic groups, that's most of California (and the West in general).