<nullifidian> the latest Dr. Stone episode somewhat trolls the Russians. A blond Russian cosmonaut is named Shamil. Shamil is exclusively a Chechen name, and Chechens are only formally a part of the Russian federation, they are very poorly integrated into the wider society. They are de-facto independent, since Russian laws do not work there. So a Russian cosmonaut is least likely to be of Chechen origin. Chechens are also not blond, they are either black brown or red. The most famous Shamil is a famous terrorist https://en.wikipedia.org/wiki/Shamil_Basayev who killed ~400+ Russians. So it's akin to calling an American astronaut something like 'Osama bin Johnson'
<nullifidian> The name Yakov is also increasingly rare in Russia nowadays, since it's mostly a Jewish name, and most Jews have left.