You are correct. Robustness requires a system that is working within it's tolerance margin, and stressing that inevitably leads to failure. A fault-tolerant system in this case would require a large amount of redundant humans. Unfortunately, the capitalist mindset prevents accepting any amount of "waste" as tolerable, which makes a robust system impossible to implement over time. Every system touched by a capitalist optimizer will eventually fail.

The idea that waste must be reduced is killing society, and this mindset must be addressed first before any other safety-critical system can be made reliable again.