I'm a Serb by blood and grew up in and have lived in Indonesia for the majority of my life, and I went to an international school with kids from quite literally every single corner of the earth, many of them being some exotic mix of various ethnicities.
Despite that, many of us are actually amazingly similar in many ways - We have a very distinct int'l kid accent that we all share, we grew up with extremely similar experiences, listening to the same music, being exposed to all the same things. Despite the superficial differences, I actually wouldn't call us a very diverse group at all when you really look at us. Some years later when I was studying, I met an int'l girl from the Bahamas and I was amazed at how similar her and my life were in many ways, despite being a literal ocean apart in completely different islands/nations. I had infinitely more in common with her than any other Serb I've ever met, yet alone the Dutch people I've met in my move to the Netherlands.
When I moved to NL, I instantly noticed that my friends and I were very different to the people there. Yet if some HR person would interview me, a white-skinned guy, and then my best friend, a black-skinned guy who has African/Japanese ancestry, I'd definitely be placed in the same "bucket" as the white Dutchies around me and my friend with the black Dutchies, despite him and I actually having identical experiences and mindsets and not really having anything in common with the Dutchies. This is, of course, understandable as an initial reaction, but my problem is that all the DEI shenanigans never get past that initial surface-level nonsense. I will probably never be labelled as anything other than "generic white guy" or perhaps at a stretch sometimes, the "eastern european guy".
I guess what I'm trying to get at in this strange ramble is that ultimately DEI should be focused on diversity of thought, and not just superficial characteristics, yet it never works out that way. Often the exact opposite, in fact, where viewpoints that don't match the superficial characteristics are often swatted away since those situations are harder to navigate than the cookie-cutter approach.