Sorry, no. Tesla ist not producing 4000 cars per week (S+X+3) completely manually. Not unless they have 500.000 employees like Foxcon. And I would ask you to provide links for your claims. Following Tesla buying Grohmann, I saw no reports of 100h weeks asked (which would be illegal by labor laws), nor of large parts of the employees leaving.

Currently, a complete automated battery poduction line designed and built by the former Grohmann company, is being shipped to Nevada, after installation in March it is expected to double the battery output to 5000 per week.