[*edit] If you're downvoting I suggest you read about the waves of purges of engineers[1][2][3] that continued well after the Stalinist purges. Moreover in this context we're talking about a ship powered with a nuclear reactor, and it's well known that Soviet reactor designs were stolen from the West[4] in the early days. Also it's a joke, lighten up.
[1] https://en.wikipedia.org/wiki/Wrecking_(Soviet_Union)
[2] https://www.egr.msu.edu/~amezqui3/personal/extracts/the_gula...
[3] https://www.sciencespo.fr/mass-violence-war-massacre-resista...