Google spent decades selecting for these "moralizers" and is now reaping what it sowed; "don't be evil" was a cultural slogan that carries consequences if it attracts a particular kind of mindset.

And in a few cases, yeah; HR is shitting bricks because it's losing people who built the underlying fabric of the system (which anyone who has built a large system will tell you increases risk to the entire software company; they're pretty sure the exiting employee has written down all the mission-critical knowledge of how to operate the system riding around in their head, and Google has a corporate culture of minimizing the "bus factor" of key systems, but there's always a risk that the next time something significant catches fire, the employee with 1.5 decades of experience who just walked out the door is the one who could have fixed it fastest).

It'll be interesting to see if quality of product suffers (i.e. if there was actually correlation between technical competence and a care about the fate of the world and fellow employees).