I hesitate to say that any study or discipline might be frivolous, seeing as I am a Philosophy Major on 'extended sabbatical.' But my gut feeling about all of this is that reading issues of inequality into a humorous subtitle (for example) in a music video is taking things to an extreme. I've been following a lot of the stuff surrounding the The Last Airbender movie, and the race problems that have surrounded that, so I'm not entirely insensitive to the issues of race in the media.
That said, addressing the language of that subtitle does not come off as studying a subtlety. Questioning the joke seems to imply that there is a same-ness that should have been enforced. I realize that at the core, every human being is equal, and in many ways the same. But there are cultural and racial differences that cannot be ignored. The writer of the post said something along the lines of "It doesn't mean that you're not a racist if you ignore racism." Similarly, I would say that ignoring cultural and racial differences does not automatically make you tolerant. In fact, I feel like that's a step in the wrong direction.
The joke in that scene was that various facial expressions were explicitly rendered by subtitles. That's silly, to be sure. But when one of the patrons' subtitles is in another language, it becomes funnier because then the medium is acknowledging the ridiculousness of the subtitles as well. The problem is that I don't feel like the joke would have worked nearly as well with any other race. If the person was white and the subtitle German, it would have been a bit confusing. If the person was black, and the subtitle Swahili, it would have been a bit confusing still, but with an added subtext. With the Asian girl, it's less confusing because the subtitle is unreadable, and instantly recognizable as something from the Far East. The subtext of other-ness is still there with the Asian girl, but it's less of a sore spot than it would have been with a black patron, and funnier anyhow.
I won't assault you with a wall of text, but to put it shortly, I think the reason I'm disinterested is because of my upbringing. There was exactly one black kid in my graduating class. I think he was the only one who wasn't white, but there might have been a Korean exchange student. I don't recall exactly the demographics of the school. Here, 99% of the people here are descended from immigrants from the British Isles. There was no slavery, and most of the indigenous population was killed off by disease, competition of resources, and a few hostile meetings. By the time big immigration began to pick up at all, Newfoundland, and the world, had seen the ugly face of racism far too much.
The prevailing attitude that I've noticed is as follows: If they're black, but just like you, that's pretty neat. If they're Asian, and speak with an accent, and don't quite fit the culture exactly, that's something to be excited and interested about. Here, a person of another race is a curiosity at most. Never something to be feared, judged, or hated.
And after considering all that, perhaps that's as good a reason as any for me not to try and speak too boldly about race issues in America. I don't have the same experience as many Americans. I've got a different perspective, which I would like to share, but maybe I could be a little bit more sensitive to those who are trying to go through videos like this with a fine-tooth comb. The US (and even Canada) has a history that means that level of detail might be important.