They're not necessarily wrong. Look at it another way. If a 1st round draft pick from RU, SU, or BC had the same results as DB, would you consider him a bust?
We all (on this board) want to see him do well, of course, great kid, great career at UConn, we all root for the guy. He's having a nice run in the NFL, he's setting things up nicely for his family to live comfortably. However, being a 1st round pick, he unfortunately is in the "bust" category as it pertains to 1st rounders. He is with his third team, and has yet to take over and retain a starting position for any of them. Hopefully he stays in the league for many more years, stays healthy, gets meaningful run, and continues to get paid.