Hi,
Most aircraft at altitude are close to coffin corner it does not matter that it is FBW or conventional. You are not supposed to fly FBW aircraft expecting the protections to save you.
I then returned again to the "coffin corner"
As you said the greater part of commercial aircrafts are flying very close to the coffin corner.
The reason is mainly for reasons of economy.
But we know very well that when a trouble occurs (FBW or not) the margin is very close to not pass into the coffin corner.
Now they say that everything is constantly put out the flights to take place safely.
But .. airplanes are flying near a danger zone......
It seems to me that there is a paradox .....
But is that the airlines are still airlines?
Are they not become air transport industries (which is different from an airline) and thus are only obsessed with the maximum benefit?