Asians in America are more often rich (Indian, Japanese, Chinese immigrants, not Korean or Vietnamese refugees), in some markets more so than whites (e.g. Los Angeles), and have much more power and access than latinos and blacks. The system is broken and adding more Asians (broadly) does not make it better. There are sub-groups of Asians which are vastly more underprivileged than other Asian ethnicities (Japanese-Americans are ~10x more wealthy than Korean-Americans in L.A. [1]). Affirmative Action isn't intended to just give non-whites opportunities equally. It's intended to restore equity by giving greater opportunity to those historically disadvantaged, focusing on the most disadvantaged first (descendants of American slavery, refugees of war, etc).
Or, instead of focusing on first principles of justice and equity, we can continue to just hand-wave the difference of ability and struggle that exist between asian immigrants and flatten it all into "asian" giving benefits to the most privileged of them.
In my industry, European-Americans and Asian-Americans have teamed up (unwittingly or otherwise) to limit diversity because they make up the vast majority of the labor and take many opportunities that could go to blacks or latinos.
[1] https://www.frbsf.org/community-development/files/color-of-w...