You skipped directly from the Lotus-derived Roadster to Cybertruck. That misses that a notable auto industry designer led the design of Model S, Model 3, Model X and Model Y. These are the models that made Tesla a long-term viable vehicle OEM. There is no diminishing that accomplishment.

You are probably right that Cybertruck is Elon's personal project to revolutionize car design. It will probably go about as well as most attempts to revolutionize car design.