Though I often disagree with him, I do enjoy Zach’s perspective on things because they are different from mine, though we exhibit similarities (e.g., both of us generally align with the center-Right in Anglophone societies). Zach may be one of the first cosmopolitan desis in his pedigree; he, himself of part-Persian heritage, marrying a South Indian Sindhi, probably to raise a family in England. In contrast, I may be the last brown person in my pedigree for a while, fading into legend and myth (or infamy!).
But one of the things I think is important to emphasize is South Asia is a civilizational entity straight-jacketed for historical reasons into a few nation-states. Though India and China are often compared together, they are totally incomparable insofar as the Han majority of China exhibit a racial and linguistic unity which South Asians do not (even though southeast Chinese dialects are unintelligible with Mandarin, the written language is the same).
By and large, I am predisposed to agree that someone like Zach is more prototypically South Asian than I am. Despite his religious heterodoxy his cultural rootedness in the Northwest quadrant of the subcontinent does put him at the “center of the action,” so to speak. In contrast, my own family’s recent origins are on the far eastern fringe of recognizably desi territory…. That is, my family is from the eastern portion of eastern Bengal (my grandmother was almost killed by the crazy elephant of the maharani of Tripura!). It’s interesting that 3,000 years after the emergence of Iron Age South Asian cultures the fulcrum of South Asian identity is where it began all those millennia ago (there was a period between the Mauryas and the Guptas when Bihar was the center).
Talking about what is more prototypically desi is like talking about what is more prototypically “European.” Being French or German is more prototypically European than being Albanian or Russian. We could argue why, but in your heart you know it’s true. There are definitions of Europeans which exclude Albanians and Russians (even though I’d disagree with those personally), but no plausible ones which exclude French and Germans.
Finally, I do think it indicates the limits and flexibility around race and brown identity. As Zach has said repeatedly he is very light-skinned (and part Iranian to boot). Myself, I don’t think anyone would describe me as either light-skinned or dark-skinned; I’m pretty much the average South Asian in complexion. Brown. Not light brown. Or dark brown. Literally just brown. But that doesn’t really weight much in terms of who is “more desi” or not. I have never watched a Bollywood film all the way through. That matters more.