The way most safety regulations work is based on due diligence, did Tesla do what a _responsible_ company would do? Did they review training from contractors, d

The way most safety regulations work is based on due diligence, did Tesla do what a _responsible_ company would do? Did they review training from contractors, do an investigation and come up with a solution to the issue? From solely the article it seems like they didn't and someone in the chain of command needs to realize how safety works.