I tend to agree with you @wayo, and if you noticed, @arminnavabi tried to tolerate the guest speakers exclusion of the word race and used "Populations" instead.
That's kind of similar to what you are saying, "Populations of certain people in certain places" 👍
@arminnavabi made very valid point there, Along with this there are Regional Dialect, that is undocumented part of the culture, there are "n" number of cultures and populations around world, we are yet to encounter. Some of the findings are very magical, like the island of Fiji (its an independent country) is 11,597 km away from India and still have very similar tradition and languages, with some variations. Same can be said with Arab countries, there a small variations but at core they are all same. Am I right ???
I'm not an expert in regards to cultures and countries but it would be interesting to see the differences AND similarities between Fiji & India.
I imagine that there is some sort of history and migration between India and Fiji that made their traditions and languages similar.. but I am just guessing 😊
Yes, some Indian in past, were forcefully migrated in an unfortunate historical era British India East India Company's trade known as Slave Trade, thus the culture and people are same as India.