Evidence isn't the same as conclusive proof. Yes, the different demographics meant that we can't conclude that any difference is due to Telsa's autopilot. How

Evidence isn't the same as conclusive proof. Yes, the different demographics meant that we can't conclude that any difference is due to Telsa's autopilot. However it is evidence that Teslsa is more crash prone. It isn't clear whether the demographics of Tesla drivers are more reckless than that of other luxury brands or not, as you point out Porsche drivers might tend to be more interested in going fast than Daewoo drivers. For Tesla on the one hand you attract people who are interested in helping the environment who I expect to be more conscientious and maybe therefore better drivers. But on the other hand there is Ludicrous Mode. But since Tesla could have had a lower or higher crash rate than other brands and does have a higher rate we have to update our beliefs in the direction of the car being more likely to crash by conservation of expected evidence. Unless you'd argue that a lower crash rate means that Tesla's safety features prevent lots of crashes.