Exactly. People acting like it's just the arms are missing his actual play. He didn't get destroyed in college, but, from what I saw, he didn't handle edge rushers the way you want from a top five pick. Guys like Alt, Slater, Sewell were just brick walls in college. They don't even look like they're trying, they're just kind of standing there shuffling their feet a little and the pass rusher never gets within five feet of the QB.
That's definitely not Campbell. He was good but he definitely got beat occasionally, missed pickups, and got pushed back every now and then. He was at his best doing guard things like pushing forward and using his athleticism to block ahead.