> Controller and pilot time and attention is limited, and it can be wasted less.

And inversely... when pilots leave too much to automation, their skills may degrade to the point that by the time you actually need a capable human crew because something has gone terribly wrong, the capability of that crew has degraded too much, and the FAA has warned about this in the past [1].

[1] https://medium.com/faa/the-dangers-of-overreliance-on-automa...