They probably let go some valuable employees, given that things like this lack nuance entirely. All of the services listed could be considered distractions from work in several
situations depending on the engineer.
Maybe, but as another comment[1] notes, there was probably a human in the loop at some point who was able to "save" people they thought should be kept, regardless of what the data said. Either that, or the process was seeded with an "ignore list" of exceptions.
1 https://news.ycombinator.com/item?id=28069040