Seems like you’re making a semantic argument more than anything then. When people say Asian they know there are many different cultures within there, but Asian people still share more in common with other Asians than they’ll tend to with other cultures and races, and calling people ‘white’ functions similarly and works pretty well.
The ethnic groups that Europeans are made out of. English, Scotish, Irish, Welsh, French, German, Danish, Dutch, Spanish, Italian... etc
Seems like you’re making a semantic argument more than anything then. When people say Asian they know there are many different cultures within there, but Asian people still share more in common with other Asians than they’ll tend to with other cultures and races, and calling people ‘white’ functions similarly and works pretty well.