I would agree with that generally. But, I had more specific thoughts in mind. I just think the learning curve is greater for a defenseman, so plugging in a depth forward is easier. One of the recent goals (2nd last game?) Sebrango and his partner got their coverages wrong and a goal was scored.
By and large though our depth defenders have filled in well. I’m thinking mostly of Matinpalo. JBD & Hamonic have been OK (serviceable for the most part & not terrible every game at least), but I tend to think of them as roster players (6D & 7D).