Some of them are legitimate, but even then there should be a form of respect where the term isn't used (though I observe they avoided the "hard-r" Zoomer because of the connotations).
And especially shouldn't be used in a case where you're laying off some of them.
Which is why I wouldn't use the term in general, at least from the top-down. It's inherently a "we're all in this together" term which especially isn't applicable when you aren't.
And especially shouldn't be used in a case where you're laying off some of them.