I'm not a Tesla owner or fan, but this article doesn't quite say that. It reports on the JD Power and Associates dependability ranking, which is based on surveys of owner complaints about anything with their cars; Tesla ranks higher than average in number of complaints.
The only supporting quote about Tesla in the article: "Tesla owners reported more problems with their exterior and interior than with other systems like propulsion, battery or infotainment and navigation. However, some did complain about troubles with Tesla’s in-vehicle voice recognition." IMO this supports the sloppy assembly claim, but not the incompetent engineering claim. It jives with what I've heard about Tesla cars, that the fit and finish is not what you'd expect for this class of car.
The only supporting quote about Tesla in the article: "Tesla owners reported more problems with their exterior and interior than with other systems like propulsion, battery or infotainment and navigation. However, some did complain about troubles with Tesla’s in-vehicle voice recognition." IMO this supports the sloppy assembly claim, but not the incompetent engineering claim. It jives with what I've heard about Tesla cars, that the fit and finish is not what you'd expect for this class of car.