Originally Posted by infrequentflyer789
So, essentially, the behaviour of the a/c without protections was accepted by the certification authorities because of the protections.
No, that is not correct. You have to distinguish normal operation and operation with system failures. Alternate law is a rare failure condition which, by design, does not occur more often than once in 100,000 flight hours. At that level of probability, no airplane is required to meet the flying characteristics requirements of Subpart B. Those requirements, and the special conditions you reference, apply for the airplane systems functioning as designed, without failures.