I’m pretty sure maintenance still is a bottleneck. I did have to get warranty work done and the wait was significantly longer than I’ve waited for warranty work on traditional cars. I haven’t read much about it in the last year or though, so who knows.

But do you even have to goto Tesla? Certainly the drivetrain and any software is highly proprietary but it also rarely needs attention. The shop I use for inspections claims they can do wear items like tires, brakes, suspension

Body work on the other hand is probably a nightmare. Actually it’s a nightmare for traditional vehicles and can only be longer for Tesla based on lack of parts inventory