It depends. Sometimes people just need a kick in the ass. Sometimes they have a blind spot that needs to be pointed out. People should be given a chance to improve. In terms of action required, there’s often very little difference between helping an under-achiever hit the mark, and helping an adequate performer grow. It’s just a question of expectations. I argue that a failure to ever do the former makes one a bad manager.
That’s not to say that they should be given infinite leeway, but nobody here has made that argument, so…
Sometimes a PIP is just a PIP. I’m sick to death of the increasingly clickbaity articles that cause employees to preemptively put their shields up as a result of painting every workplace as being a very particular sort of…terrible corporate America.