It's not. The point is that virtually no transport category aircraft have inherent stability in all dimensions of the flight envelope, as this would require too

It's not. The point is that virtually no transport category aircraft have inherent stability in all dimensions of the flight envelope, as this would require too many compromises in other areas. There's nothing unusual about the extent to which the 737-MAX relies on stability enhancement. There are existing commercial airliners that are far more dependent on it for safety. For example, the Boeing 727 has two redundant yaw dampers because failure of both yaw dampers would result in the aircraft becoming irrecoverably uncontrollable at certain altitudes. In contrast, if your removed MCAS from the 737-MAX it would still be completely flyable.