All true
to add
Fancy thinking has a way of biting your a$$ sometimes when it interacts with human performance under emergency conditions. Pilots with negative buoyancy may react in ways that negate the automatics. Then there is the difficulty of how to handle things like ash ingestion, where the engines likely were not restartable initially until repeated attempts finally wore away enough ash-buildup to get one or two going again.Like I said earlier, I can find fault with the pilots only in the first minute of an event whilst realizing minutes later no amount of engine restart software is likely to help