2 the second part, probably not. But their being a statistical outlier for the past 3 years is some good evidence something wonky is happening.
As for particulars, they just seem uninterested in moves to the center of the ice. On the rush, it's up the wall. With possession, it's back to the point. It leads to more shot attempts, longer possession time, but the opportunities are lousy.
Same for defense. They get up in the face of forwards to end possession quick at the blueline. But the degree of risk and difficulty seems crazy high. I just don't see other teams doing it. Our players get into the zone with possession and fire that wide angle shot, because the other team isn't scared of wide angle shots.