And, on top of that, sending the work-related email out late on a Saturday afternoon with a Monday deadline perfectly demonstrates the insincerity of the request. And, on top of that, no mention whatsoever of "failure to reply by the deadline = signal of intent to resign" in the email itself, that was just something Musk randomly threw out in a tweet.He's not doing it to see what people are actually doing, they will be building a data model to cross-reference roles.
That and a petty exercise of power of course. "Dance pathetic monkeys, dance!". Easier to make the working environment so hostile that people fire themselves.