I think people are turned off of Metcalf way too much at this point and are using bad arguments to justify it. He's still a 1st round type of receiver on pretty much everybody's board.
Also, keep in mind that the thing that Ballard has said is hardest to evaluate in WRs' transition to the NFL and a thing that is extremely important for a WR according to him is their ability to beat press man. Can you guess who's the receiver in this class that beats press-man the best with his physicality and strength at the LOS? It's Metcalf. So don't be too quick to eliminate him from consideration.