It's a common observation, and I've seen it on here and elsewhere, that our players frequently play poor passes. Ones that might reach their target but do so either behind the target or that leaves the target having to work to get the ball under control. I've seen it myself even if I do find myself saying, "there is something not right here, these are professional footballers. Surely they can pass the ball 10 yards".
To have only 2 players in the top 150 passers in the league, both of them centre backs, would lend weight to the theory being put forward.
Whether it's down to confidence/crisis of confidence or just bad technique is an interesting argument.