That makes zero sense. Low experience means exactly that, low experience. the more reps he gets the more he learns the league.....you know, gains experience.
He has the tools to be a good defender and is still young enough to learn how to play in the NHL. It's almost like people don't realize that it can be tough to play against the best players in the world, and that some players don't figure it out in their first game in the league.
To state he already "is what he is" after 33 NHL games is incredibly narrowminded thinking.