> Also, the author makes a really good point that you probably want to help all disadvantaged(unless you're racist/sexist for some reason): why exclude asian girls if they get less help?

That one group is focussed on dealing with the problems experienced by one disadvantaged group does not imply intent to exclude others, it can just mean that they feel that the particular reason that one group is underrepresented are specific and that that is what they are focussed on addressing.

Particularly if the problem they are addressing isn't outright racism/sexism, but disadvantage due to mainstream educational systems being culturally maladapted to the target group, other groups -- even if similarly disadvantaged by the mainstream system -- may naturally not be well served by their particular programs either, and making clear where the focus is helps people to find the right fit for their needs.

Obviously, the ideal state would be to not need such targetted groups, but the existence of disadvantage doesn't mean that there is a good short-term one-size fits all solution.