And despite no training we have what may have been some amazingly good MCAS recoveries within the US during takeoff into things like turbulence triggered MCAS nosedowns - pilots thought their own fault / couldn't understand what was going on but the limited reports in terms of response are great for totally untrained situations. I'm sure pilots were pissed, they should be!

I think you are failing to understand how the chain of safety works. Ideally you have a great design. If you don't then ideally the flaws / weaknesses don't get hit because you have things like good maintenance. If you don't have that then maybe next hope is the pilots. Worst case you then you require instrumentation to help reduce risk of the next tragedy. Etc.

This system has resulted in an incredibly safe mode of transport despite many challenges / crazy tolerances etc.