i don't think we're all talking about the same thing here. minority status is not necessarily the same as URM status, and URM status is not necessarily the same as disadvantaged status. there is no requirement that you must speak spanish if you check a hispanic box. i'm south american and don't speak a word of spanish, but i'm happy to check the box for my ethnicity (which does not have URM status). why? because i'm damn proud of everything that i am. i'm polish too but don't speak a word of THAT language, yet no one would ever think of questioning my polish heritage based on my lack of ability to speak the polish language. there is a certain double standard in the perception here.
regarding the controversy with serpiente's premed advisor's story, we're talking about a different situation. the box for black applicants is now often designated 'african american' because that is now the politically correct term for blacks. so even though there are 'white' residents of the continent of africa, what this box is trying to represent are people who are of black african heritage, as AA was initially implemented as a method of slave reparations (it grew to include other minority ethnicities in this country). therefore, white south african is not 'african american' as affirmative action defines it. that is probably why this person came under fire, because they were misrepresenting themselves for the sake of AA. if the box said 'black' instead of 'african american', this person wouldn't have marked it.
besides, as someone else mentioned, beasley's issue is actually a non-issue. hispanic ethnicities aren't races anyway, and the AMCAS app was altered to reflect this. it first asks you whether or not you have hispanic heritage; then it asks you if what race you are. so there is no issue of trying to decide what you want to be, because the app is designed to let you mark both.
self-identification is exactly that: self-identification. how you want to define yourself and what box you want to check is entirely a personal issue.