There's zero evidence the Russians killed Kaczynski. The pilots made serious mistakes and broke safety rules. Also, when 2 years before, in 2008, a plane captain didn't bend to Kaczynski's pressure and redirected the plane to Azerbaijan, Kaczynski gave him a lot of sh1t and accused him of cowardice. The guy just didn't want to land in Tbilisi, as the Georgian airspace was full of Russian military planes.
As the result, the plane captain gave up his job and Kaczynski removed all safety procedures and the new rules were that a plane captain's decisions were to be ovvlerridden by a senior officer.
So, before the fatal flight to Moscow, the airforce commander was put on board the plane to override a young and an inperienced captain's decisions if they collided with Kaczynski's demands.
No, there was absolutely nothing great about Kaczynski.
The Russians are cvnts, but you cannot blame them for everything.