I think Hutson is one of the weirdest case of a player labelled a defensive liability which is not fair based on his progress/improvement and his high hockey IQ.
I will explain:
First of all I do believe there is a stigma about undersized players (forward or defenseman) that they are liability defensively and easily pushed over or bullied. A bit more so for defenseman. While it is not false in a sense that smaller players will always strugle against larger sized player and yes clearing the front of the net is not ideal when all players are stronger and bigger than you but that's only one part of the role. The other more important part is limiting turnover, create offense from the defense and limiting scoring chances for the opponent. I think Hutson is a top defenseman in that role.
The other part is how you react with the puck on your stick and how you react without the puck. I will also add on how to use your smaller frame to your advantage and this is where Hutson shine. Hutson has been and I will add by far the best player at transitioning the puck from defense to offense and to help create offense at 5 on 5 or on the PP. His smaller frame allow him to be very shifty and hard to contain as well as him being able to use his stick more defensively than using his frame, he is smart, he does not over commit or rarely try to do too much. That has made him very valuable for the Habs, I will even add that if you removed him from the Habs this season, they would be near the bottom part of the standing and not in playoff contention. He is the Habs MVP as a 20 years old.
The other part, which is also typical HF. Is the drafted rank of a player. Although HFBoarders will rarely admit it, they do have some biases on the projection of a player if they were drafted outside the first round. Or at least it takes longer time to accept it. If Hutson is the exact same player, same size, same offense but he was drafted top 5 overall, it would be more acceptable for him to be a calder candiate as he has higher draft pedigree. I could also add size if a player is listed as 6'4 instead of 5'10 with the exact same stats he is instantly considered better defensively although it might not be the case and a top calder candidate for sure.