I think skating in general is too nuanced to be labeled as either just good or bad. Different positions and different types of players can be effective with, or without, different skating aspects. McGroarty has good size so he doesn’t really need to skate like Caufield or Hoglander, to be effective. I actually think his straight-line speed is okay for his build. He gets going from A-to-B and gets to openings. Just like on his goal. Where he’s a little rough is the lateral skating, turns, cuts, the footwork kinda stuff. Who knows if it’s good enough as is or if he can improve it. It might be impacted by genetics like hip joints or natural mobility. Or just learned habits from 12+ years of playing a lot of hockey.
Sorry for the rant.