AoA is there if you want to use it, via HUD if fitted or on the PFD if you use TK/FPA.
Do you mean the bird/FPV? If everything is working it gives you an *approximation* of your AoA, but unless you know the angle of incidence it'll only ever be that: an approximation. Given that the FPV uses a combination of air data and inertial sources, I'd caution very strongly against referencing it for anything where you might have an unreliable air data situation. Even if you have the numerical value, it's not helpful unless you have a benchmark. I wouldn't go searching around for a small number in the corner of the PFD when the difference between stall and un-stalled is 1 degree or less at high levels.
What you could do is have a system that looks at the current AoA, and the stall AoA, and have a synthetic voice call out "STALL" if one exceeds the othe- oh, wait.
If you're in any doubt about the situation, and it's shouting "stall", then do the stall recovery procedure. Otherwise set pitch and power memory items and WAIT until the situation stabilises.