'm sure flight engineers said the same things about how indispensable they were as well
So lets compare apples with asteroids shall we ? removing the FE from the flight deck of a 3 crew operation as A/c became more automated, particularly in the engine and fuel management department isn't really the same as removing all human input from the flight deck now is it?
You're credibility with statements like that is not getting any better.
Jeezuz Christ-ep, my computer crashes at least twice a week, good luck with your pilot-less commercial A/C, I hope you have achieved immortality so you live long enough to see that