Asian women suffer from 3 main problems.
1. If other Asian women are desperate to white men because of racial inferiority, many white men will develop the idea that Asian women are desperate, think that they are superior for being white and treat Asian women poorly. Asian women would also have lower boundaries and would tolerate more misbehavior from white men that other women would not due to the inferiority.
2. People in general seek commonality in relationships. Some Asian women who are severely affected by an inferiority complex may sub-optimally choose unwoke partners that they have little in common with. The lower commonality and inferiority also bias Asian women's partners and the partners' friends and family toward being less accepting of diversity than the average interacial relationship. e.g. https://www.youtube.com/watch?v=PAJAVHzBsAg
3. If she does have an racial inferiority complex, then chasing white men would confirm and strengthen her racial inferiority complex and cause additional suffering.
Having established that some forms of that type of relationship can be harmful, the question to answer then is: how prevalent are racial inferiority and status/acceptance seeking from the Asian women and fetishism and white superiority complex from the white men in these relationships?
You don't think there isn't anything racist about that? You have a strange definition of racism.
Definitely not problematic to white males who are dating asian females though.
Honestly, among white guys it manifests itself as Asian women being "easier" and there's nothing wrong or racist for taking advantage of it, but it definitely won't appear to be a problem from your perspective even though something deeply wrong is happening.
Who's getting harmed when Asian women have a preference for white men when dating? Who cares? To each their own, no? Are you implying there's some maximum percentage of women that can prefer another ethnic group when dating, and anything above that is problematic?
Edit: I should've specified that I'm talking explicitly about their commentary on asian women's dating patterns, not anything else in their comment.