"Hmmm, does this imply that Airbus aircraft cannot be stalled or flown beyond airframe limits?"
Yes! As long as the flight computers don't revert back into their "safe" modes, you are limited to:
2.5 G's
66° bank angle
Specific nose up/down attitudes.
Also, shortly before stalling, the aircraft's autothrust system will select max thrust and the attitude will be limited to a non-stalling attitude.
If you pull harder, nothing happens.
The same thing (well actually the opposite) happens if you are close to Vmo.
The nose will go up and the power will be limiited.
These safe guards are all turned off in the backup mode known as "Direct Law". There the stick functions the same as the yoke on other a/c.
You also have a mode between "Normal law" and "Direct law" which is called "alternate law" and there you still have some features (like autotrim) and safe guards.
Regards,
Mark