There is your main answer.
Many of the Asian Americans came here for higher education in an environment >95% (if not >98%) skewered towards liberal and progressive group think.
Most of these fresh Asian Americans tend to have only superficial experience with general population. As they (I was one of them) encounter nothing but lib talking points from their professors and peers in the first few (let's say 4 -5) years of coming over here, it leaves a DEEP impression.
And I know, from personal experience, that I wanted to be accepted into the group so very much, I thought I was leaning towards Dem the first ten years or so since I came here.
What is the remedy for that? There is no strong Republican counter group(s) on campuses as yet.
Great point, very true.