The pattern on the top tyre will have been made in the few hundred metres he drove with it flat. However, it's true that MX tyres/rear suspension are often badly adjusted. It doesn't help that the car drops the suspension when at speed, and the geometry is insufficiently tolerant to avoid a pivot of the wheel, resulting in uneven wear (which is indeed common) as seen in the lower tyre. Getting a proper wheel alignment is recommended, but very few garages have the appropriate equipment. But, yes, Tesla sucks in nearly as many ways as it delights!