Nobody was forcing him to use the feature if he knew it wasn’t working as intended on that particular stretch of road. My issue with your statements are you’re shifting 110% of the blame to Tesla when that isn’t remotely the case.
Tesla don't make preconditions on where to use their autopilot. How many Tesla's discover a new 'problematic' strip of road each day? Is every first Tesla to drive down a new road to become a crash-test dummy when it turns out the autopilot just can't handle that next bend in the road?
It's absurd to think so. The product is not fit for purpose. I'm confident the law would agree.