His tweet sounds dumb but there is some truth in it.
As you say, planes and procedures have become very complicated. And I think there are only two options: making planes simple again which make them less efficient or let computers fly the plane and make the interface simple(r).
If you look at the rockets of SpaceX then you can say they are the extreme form of fly by wire and very instable when it comes to aerodynamics. But computers can land them within centimeters when they fall out of space.
So maybe that will be the future. Planes that are very efficient instable flying 'rockets' that are controlled by computers.
