I've never spoken with a Tesla employee, current or former, who hasn't corroborated this information about working conditions. Doesn't matter if you are a line worker in the factory or an engineer in the design offices, you are expected to put work above all else, keep your nose down and your mouth shut.
I'll never buy a Tesla because of the shit that I've heard about how they treat their employees there, let alone that dipshit Musk spouting off about full self driving and never following through.