> The autopilot of an airplane will not avoid any kind of stationary obstacle, not even a mountain

Well a core part of the flight is colliding with the ground at the end.

But also the hazard of a stationary object doesn’t exist - crew receive an IFR clearance and fly that route; that route won’t have stationary obstacles.

Aviation’s autopilots aren’t “eyes-off” in VFR so that’s a meaningless comparison.