The reasons behind that might be habit, might be training....
Whatever 'training' these incompetents had was clearly totally inadequate. Either that or they didn't listen and weren't properly tested.
Read the CVR transcript from long before the stall and you'll get an idea of the level of professionalism displayed by this so-called 'crew'. Remarkably reminiscent of AF4590 crew behaviour.
The captain couldn't even readback or recall simple HF allocations as PNF.....