This is not just disgusting and infuriating, but also simply stupid and bad management style. If course you should always strive to reduce the bus factor. But

This is not just disgusting and infuriating, but also simply stupid and bad management style. If course you should always strive to reduce the bus factor. But I don't see any reason to not turn such an experienced, and good at their job, employee into a formal leadership/mentorship/consultant role. Seriously, SpaceX, you can build rockets, but you can't make such obvious management decisions? What the eff?