They didn't miss on him though. He's turned into exactly what Michael Hodges saw when they drafted him and Baun credits Hodges with his development.
Hodges continued, “Well, there was enough movement skills to say, this guy could play a different position besides Sam linebacker and I told Jeff (Ireland) very early in the process, when we watched him, I see Sam, Mike, boom. Like I wrote it down. It was the first note I wrote on him and really that aligned with other people’s vision as well. And it gave us the confidence to go get him where we did and Sean (Payton) agrees with it.”
https://saintswire.usatoday.com/2020/06/16/nfl-draft-saints-zack-baun-wisconsin-football-news/