This isn't proof that nobody should grade drafts immediately after they happen. It's proof that those projections could very well be abysmally wrong. People are still going to make predictions about the future, and many others are going to enjoy reading and debating them. That's what GM's are paid big money to be good at. Then, like in this case, we can go back and determine the credibility of those original predictions and/or the real ability of GMs/draft teams to execute their roles.