I understand your point. Well taken. However the Russians, for a long time, took a different approach to design and assembly. It was very pragmatic and they figured it wasn't going to last a long time so why build it to last a long time.
Reportedly Kurt Tank, the designer/developer/pilot at Focke Wulf, laughed in the 90s when he saw the restored FW-190. Someone asked why he was laughing and he said they expected the life of the machine to be 50 HOURS or less.. not 50 years.
And for the longest time, the Russians adopted the attitude it was going to be shot down, blown up, crashed.. so why the extra rubles? Other countries found this out when they bought MiGs and the engines were shot in a few hundred hours. Why? The Russians wanted thrust.. and to get that thrust they burned their engines at a much higher temp.. higher temps meant shorter lives. Their response, "So?"
For the Russians, there was no second time. Interesting too was the approach to maintenance. When the MiG-21 came off the line, it came with a truck, a tow bar and bolt on components that could be replaced. The truck was used to tow, refuel, rearm and carried tools for field repairs. Any big repairs and the airplane went to depot. Take a sick bird to the depot. Take home a good bird. No hangar queens. No cannibals. It wasn't a beauty pageant.