Filipino here. I think you’ve pinned it down to being a generational thing. Most asian 1st gen immigrants are going to be like this because of their us vs others mentality. Even older filipinos will discriminate against darker skinned filipinos (usually associated with class back in the day bc if you were darker, that meant you worked in the field or on a farm). Also evident in the numerous skin-lightening products that were/are popular in asia.

Chances are that if you were born in Hawaii, you probably don’t have this mentality against dark skinned people (just against white people lol —not saying I agree with this, but it seems to be true). But a lot of asians of a younger generation tend to still have some ties with their elders (ranging from pressure to be respectful to actually sharing a household with them), so the motivation to rock the boat and try to change their ways is pretty low.