Well, if this were true, it would be the definitive argument for the removal of humans from the flight deck.
Autopilot does a pretty good job of flying the aircraft, but in my experience has proven to be pretty useless as deciding whether or not to divert, or where the best diversion airfield is. Also pretty crap at dealing with passengers, crew, ATC and dispatchers. Humans bring quite a lot to the role that computers are way, way off being able to handle. We'll be here for a while yet, even if the nature of the job changes.
I'm like to practice manual flying to keep my skills current, but I think there is a time and a place for it, and 'every departture/arrival below 10000' is a little too sweeping for me.