A "conventional" aircraft without envelope protection would have crashed in the same way if allowed to reach the same configuration. The only difference is that the envelope protection could have saved the day if it had worked.
So maybe one more lesson for ALL pilots, not only Airbus drivers.
Do not allow the aircraft to stall or in any other way exceed the limits of the flight envelope. Bad things can happen. Simple basic piloting skills.
Leave the exploration of limiting corners of the envelope to professional test pilots, they know how to do it safely.
Envelope protection is essentially an add-on to an otherwise normal aircraft which can, in many foreseeable circumstances, mitigate the effects of a bl**dy idiot doing something stupid. There will always be possible unforeseen complex multiple failure modes which the protection cannot handle and the system did not make matters worse, it simply did not make it better. All of which is probably academic because however idiotproof you make any system, the world will deal you a better idiot.