I don't think in large companies or names like Meta, the top brass actually care what the moral amongst workers are. I was at Accenture when they let a lot of people go. I watched very talented people just leave. Nothing changed. Management couldn't care less. They could always hire anyone they want/need to.
That's true to a point, but Amazon is finding out the hard way that eventually the well of people willing to put up with bullshit runs dry and it becomes much harder to get actually good talent or workers.
Meta needs to be careful IMO. The subset of capable people willing to work for a company as demonstrably evil as them is not infinite.