Maybe not historically bad, but the defense, in terms of defensive zone play, is pretty bad. Trouba is the only one capable of high quality defensive work in the role he's playing. As impressive as Fox has been as a rookie, he's not amazing in the D zone yet. I believe he will be in a year or two and he's obviously improving as the season goes along. Ditto Lindgren. DeAngelo is, at best, below average in the defensive zone. He makes up for that elsewhere, but that doesn't help when you think about defensive breakdowns, etc. Skjei is playing over his head at the moment. He's above average in the defensive zone when in the correct role, but he's not playing that role. We don't need to discuss Staal.
When you put all of that together with the lack of defensive capabilities among the forwards, you're going to have issues. And you're going to look very disorganized at times, which is our perceived lack of structure. The youth is improving, and as they do so does the team D performance.