> In my experience, people in the United States often (incorrectly) short hand East Asia as Asia just like the people in the city of New York will often (correctly) short hand New York City as New York.

In my experience, the only demographic who complains about “Asia = east Asia” are people from South Asia, aka Indians/desis

Ironically (for my generation in the UK at least) "Asian" meant "South Asian" and for a long time we didn't have a useful shorthand for "all parts of Asia"

We aren't the only ones, but we are the loudest about it, because erasure sucks.