Automotive engineering isn't a three-dudes-in-a-garage startup where "the shopfloor" calls "the design engineer" for "that part" because "there's a production limitation" and he needs to fix his design. It works nothing like that.
Exactly the same philosophy applies at Tesla.
Whatever it is that Elon does it works for his companies.
If you don't want the expectation to give 110% of what you can, don't work for Elon companies.
You can argue that factory workers don't have choice what job their are doing, so they need checks and balances.
But people who could work remotely certainly can change employer if they dislike Elon work ethics.