His skating is ok, certainly not great. It is not a strength at this point but should not be a problem either, the comparison to Hughes and Barzal are idiotic but for some reason we are listening to a ridiculous play by play guy lol.
I have been a fan of Smith's for a while and think his upside is really high, his greatest strength with regards to how he uses motion to create offence is deception and anticipation. He has decent speed but mechanically he is quite flawed, if he can straighten out his mechanics, specifically ankle flexion and a little deeper knee bend then he can really take a step forward but these things are just so difficult to predict. It is hard to say if these are biomechanical issues or if they are more lower body strength related without working with him personally.
Comparing him to such explosive and incredibly dynamic skaters like Hughes and Barzal is to be expected from a play by play guy who views the game through a layman's lens.