I would rate FSD as being close to snake oil from the 19th century, maybe a step up. If the had EAP (enhanced auto pilot) for a lot less, I might buy that. For now the AP (autopilot) gives you about 80% of what you'd get in FSD aka Fool Self Driving.
AP still has issues but it isn't bad. It did try and ram me into a guardrail for no apparent reason yesterday but it had been at least 200 miles since the previous time it tried to kill me. I was feeling more comfortable with it recently but I was showing my son how it wasn't too bad. It then decides to veer hard left at about 70 mph. Thank God my hands were on the wheel.
When I first joined the forum, I thought people were full of BS about how AP tried to kill them. I am now a believer. I have no idea how that guy who keeps getting arrested in California for riding in the back seat of his Tesla isn't dead. Love my car a lot, but very leary of AP. It feels more like beta software.