Re: The bigger picture..
So how come Southwest can fly the MAX OK, but some South East Asian and African airlines can't?
I will ignore the dogwhistle racism I sense in your post.
However, to extend your logic:
- Lufthansa can't fly 747s
- Air France can't fly Airbus A330s
- British Airways can't fly 737s
- Delta can't fly 727s
- and Southwest Airlines can't fly BA146s, 737s, 727s...
Accidents are caused by pilot error, design faults and maintenance faults. We should strive to eliminate all of these, but design faults are the most egregious as they affect every model of a given plane.