Comment by ng12

This relies on being able to accurately identify poor performing engineers, which is very tough at a big company. What I've seen happen is they hang around for a year or two, jump from failed project to failed project, until they either find a niche role where they can do no harm or run out of options and get fired -- but at that point they have a year or two on their resume and will find it that much easier to get the next gig.