Sure, every 17-year-old need to improve all that. Who did you compare him with? Nobody because he was the only draft-eligible remotely producing well in a 20+ years old tournament (and he's young in his draft year). They even sent him out in overtime. They didn't trust Crosby like that in his 16 years old WJC.
I saw all his current flaws as well, but I find your statement absolutely ridiculous given the situation. He's in McDavid levels of surefire at this point, so far ahead of the pack (again ignoring Michkov here for the time being, Michkov is likely the real 1st OV this year).
Dvorsky was the only other competing player that was in the tournament, he struggled mightily, the game was too fast for him - and he's going top 10 at least. Let's see if and how Carlsson, Fantilli, Yager, Benson, Allen play at that level in December in a weaker field. 2023 might be a strong draft, but finding them flaws against 2020 draftees is nearly comical.