When you highlight only the negatives, yeah it does sound like no one should hire that intern. But what if the same intern happens to have an encyclopedia for a brain and can pour through massive documents and codebases to spot and fix countless human errors in a snap?
There seems to be two camps: People who want nothing to do with such flawed interns - and people who are trying to figure out how to amplify and utilize the positive aspects of such flawed, yet powerful interns. I'm choosing to be in the latter camp.