The fundamental core engineering -- the motors, the inverters, the control systems, battery management in their cars are pretty damn fantastic and they were consistently ahead of most others. And the Model S, while a dubious luxury car in terms of fit and finish, was a piece of amazing engineering when it came out.

The Model 3 and its variants I think are meh from a UX POV (stupid centre iPad distracto-slab etc) and I won't pay for them because of who is behind them... and the lies about full self driving, and the crap support etc... suck.... but I think it's disingenuous to call Tesla product crap.