Plane pilots have to pay very little attention with autopilot on compared to Tesla drivers with Autopilot on.
Autopilot in VNAV/LNAV modes does not do this, it follows a programmed flight path.
TCAS is the anti-collision system, but it's a secondary system that only gives information to the pilot. It's up to the pilot to make inputs to avoid a collision.
Pilots are the primary anti-collision system - by using their eyeballs to look for other aircraft when flying under visual flight rules (VFR) and also following clearances/information from controllers when flying under instrument flight rules (IFR).
> Plane pilots have to pay very little attention with autopilot on compared to Tesla drivers with Autopilot on.
This is not correct at all.
The real autopilot in planes is called Auto Flight System and is very recent and needs to be monitored closely. It can lift off, fly and land on it's own, but basically only in good weather condition.