That's nonsense, of course he is a shutdown D & that's exactly how they play him, you are not the only one who has seen him live. Again, I'm not saying he will ever be good enough to make the NHL but IMO I think it's still too early to say given the changes that are coming with this defence.
People keep bringing up Boro yet the guy has over 300 NHL games to his credit & this org loves him. Look around the league there are plenty of shutdown D in the NHL & there are plenty of big D guys who can skate coming out of junior leagues around the world who also have puck skills. We also see these supposed players with puck skills make all kinds of mistakes too & get pushed around & can't stop big opposing players but that rarely gets mentioned because of the constant negative narrative against players like Boro, yet coaches keep him in the lineup. No one is saying they are the best players on the team, they are not & it's the worse team in the NHL so there has to be improvements made & these guys could be gone. But at the same time there are also skilled players on this team who should be shipped out too because they are too easy to play against & are terrible defensively.