Kay Pam
In defense, an aircraft which is exempted by demonstration does not have to adhere to that which is exempted, nor to related prose in the regulation.
IOW, AirBus aircraft demonstrated an aversion to aerodynamic Stall sufficient to satisfy the Regulator. This also takes into account the airframe's static stability, longitudinally, to and through Stall.
Given that, it is a short step to assume the requirement to maintain the Stall aural warning below 60 knots is less stringent than the rather important exemption from shaker/pusher.
I have found "Low Energy Awareness Program", and it is related, but cannot load it, perhaps it is proprietary.
There may be, at the root of this apparent warning "failure", a very good reason the Stall Warn is inhibited below 60 knots IAS. EFCS, once Stalled, may have an exemption related to "recovery" that requires the Warning be inhibited. Whether or not it is related to Low Energy warnings, I have no idea?