Yes it is. At least as far as commercial aircraft like the Airbus, Boeing, Embraer etc goes.
The airbus control laws provide early warning and limited protection against high load factors, AOA, high speed etc etc.
The flight control laws do
not make the aircraft immune to stall.
From the Airbus Flight Crew Training Manual:
Protections are intended to:
• Provide full authority to the PF to consistently achieve the best possible aircraft performance in extreme conditions
• Reduce the risks of overcontrolling, or overstressing the aircraft
• Provide PF with an instinctive and immediate procedure to ensure that the PF achieves the best possible result.
Not immune to stall.
Here, a fully serviceable airbus 319 stalled:
Chaotic CRM blamed for Chinese airbus a319 stall incident during approach
Whatever anyone tells you, it can stall in normal law, all it needs is to be misshandled or get a little "help" from a wind shear or downburst just as you reach a-max/a-floor.