I didn't necessarily take it in a "racist" sense, although now you bring it up...
I was initially thinking that he was trying to show he takes his own test seriously. Look, I don't mean that there probably isn't something to these kinds of conclusions, but he must know, or at least should know, that most of these things are probably influenced by multiple loci, most of which haven't yet been discovered, and that then they may be influenced by all sorts of epigenetic factors.
Just as one example, 23andme tells me that I'm lactose tolerant based on genetics. Yet, I've had some problems with too much dairy consumption, even of cheese, since my mid-thirties. Likewise, with "diets", they tell me that a high protein diet wouldn't help me lose or maintain weight and that a balanced diet with controls on caloric intake is most beneficial. Well, I tried an Atkins type diet for a few weeks, and it produced the fastest weight loss I've ever experienced. Those ten pounds sort of melted off. However, I felt like ****, my skin looked awful and yellowish, and I also don't think it's very healthy. You just don't get all the right nutrients, just as, imo, you don't get all the right nutrients on a vegetarian diet. These tests are fun, but does he really want us to believe we should change our whole lives based on them? Try out different food lifestyles. See what happens in terms of weight loss or maintenance, energy levels, stomach discomfort, skin tone etc., even bad breath. Also consider how easy or hard it is to get all the proper vitamins and nutrients. Then decide.
As to genetics itself, I've been disenchanted with him for a long time. He sold out a while ago, as a lot of these people are doing, to create personal genomics tests that they have to know are not very accurate, and that certainly aren't being interpreted correctly.
In the interest of full disclosure, I'm no fan of the Genographic test, and so I don't have big hopes for Insitome.
My respect for him as a geneticist started to wane after a series of bad predictions and sloppy analysis, like those for a big reflux from Iberia to central Europe, and most recently for the last paper by Sarno, which he guided and was incredibly superficial.