https://en.wikipedia.org/wiki/Automatic_Ground_Collision_Avoidance_System
https://www.lockheedmartin.com/en-us/products/autogcas.html
This kind of system has been in use for years now. It's already in use in aircraft such as the F35 and F16 and it already saved pilots lives so it wouldn't make much sense to not have this safety feature in aircraft decades from now. You could say that it requires skill to keep you on the verge of blacking out and doing so should result in some kind of consequence but it's not like the system takes over dogfighting for you all it does is to change to a steady trajectory to avoid crashing into terrain while you are blacked out and for the sake of realism there should be this kind of feature. Of course you should still be able to crash when in full control and this should only activate when you are blacked out.
On the subject of how smart this system should be that's a different topic in it's own. For the sake of easier implementation it should probably be more of a "dumb" system meaning it will avoid crashing into terrain but that doesn't mean that path won't lead you to getting shot at from AA so there still can be very bad consequences for blacking out.
The Automatic Ground Collision Avoidance System (Auto-GCAS) enhances safety by mitigating controlled flight into terrain (CFIT) accidents. The Auto-GCAS team was awarded the 2018 Collier Trophy for the design-integration and flight testing in the F-35, marking the year's greatest achievement in aeronautics. This team includes the Air Force Resea...
? Not bad, but... What if same system will work not so good will be you cannot make to much blacked out maneuvers?