Management is a protected class. A few managers get taken out in the RAs but on the whole, they are safe. It's ridiculous, since management directs the work and should be held responsible if the business doesn't do well; so they should be the first to go. There are many IBM managers who were crappy at tech work. They're crappy at management too, but they realized it was a safe place so they went for it.
So much this, @Om1PUNu-1pbu. They take all the glory when stuff goes right, but no responsibility when it does not. It's infuriating.