Exactly.
The Abrams tank for example. Western tanks, the Abrams and Chieftan in particular are not designed to be invulnerable, thats impossible of course. They were designed to be as survivable as possible with emphasis placed on CREW survivability. That decision was made because training a crew is far more difficult than building a tank.........provided you have the industrial capacity to replace them at multiple built in a day.
We had that in the 70's when it was designed and built.
Now.....we cant replace the tanks, and the crews cant be replaced either.
Ancestors sad.