Airplane autopilot: Engage, divert attention for minutes, not die (consistently). Tesla autopilot: Engage, divert attention for 10 seconds, die (also consistently).
Airplane autopilot!=Tesla autopilot. Name is misused.
Also take a moment to appreciate what you say "It's ok to use this name on cars, because professional pilots know you can't completely rely on plane autopilots. People should know that and if they die it's their fault."
The video you provided shows a very unusual case. Most autopilots on small aircraft are not really running software so such "bugs" are virtually non-existent, and in large aircraft they only use tested-to-death systems and they practically never bug out.