When I was an engineering manager there, engineering leadership described performance reviews as, in a large well run engineering organization, you'll probably be firing 5-10% of your employees every year for low performance. (Well, "non regrettable attrition", which includes people who quit when they get pipped.)<p>Lower than 5% at scale would be a red flag, not necessarily wrong, you don't want to "stack rank" with a quota and force managers to fire people who shouldn't want to be fired, but if you have 100 engineers in a department and only one of them gets fired in a year, probably the director is making a mistake.<p>So, I'm sure this won't be the only firing for the year at Meta. But this doesn't really seem like it's very far away from normal practices.