Has he studied what the point of going to the effort to engineer that would be?
Kabbalah in Chess by Salov

Now, this may not be a coincidence, but not for the reasons you are mentioning. The names you are mentioning are family names, and chess is not culturally huge everywhere in the world. For example, I live in America, and games like MtG are MUCH more popular than chess, and probably gobbles its market share up in the gaming community here. Same with videogames. So only certain places have people who actively support and care about games like chess (ahem, northern/eastern Europe, ahem). In those places, they speak the same/similar languages, and those languages have certain sounds in common, like a hard 'k' noise. That noise is not in Latin, or its descendant languages like Spanish, spoken in countries where chess is not as important as say, soccer. To get to the point, their names have similar sounds because they are from countries near each other where they speak similar languages and are culturally similar in valuing chess.
@1
K or C is a strange coincidence
Capablanca, Karpov, Korchnoi, Kasparov, Kramnik, Carlsen, Karjakin, Caruana

Incidentally, the numerical value of Kabbalah in gematria is 137. Which is the integer part of 137.03602..., the inverse of the fine-structure constant, a dimensionless constant that is fundamental to physics. So that Chess has had eras of L's followed by B's followed by K's... is another eerie coincidence!
One of the Valery Salov studies:
Ka-BBa-Lah
Have you ever noticed the pattern of letters: who was the world champion in the first quarter of the 20th century? Emmanuel Lasker. He was champion for 27 years. And there were two more Laskers, his brother and Edward Lasker. Lots of Laskers
Then, by mid-century, they all started with the letter B: Botvinnik, the world champion, Bronstein, the candidate who tied him, and Boleslavsky, who lost to Bronstein. All with B.
And in the latter part of the century, everyone's names started with K: Korchnoi, Karpov, Kasparov, Kramnik, Kamsky, there's also Carlsen, Karjakin, Caruana [in Russian, Carlsen and Caruana are also spelled with K] . Notice the pattern: K, B, and L.