BU rounds up. 5'10" is not literally 5'10". EP is not a source of truth. They can't even match his weight to BU's roster listings. But again, not the point. Your hyper-focus on thinking height is all that matters is odd. Quinn Hughes was 20 pounds bigger than Hutson as a college freshman, and Hughes was 8 months younger. Stop being obsessed with height when his frame is the bigger concern.
Teams might have "missed the boat." But it's not because they're surprised he grew 1.25-1.5" inches. You have access to less information than NHL teams did. Trust me. They knew the measurables of his family members and wouldn't have expected he was done growing. No NHL team is like "OMG, he's 5'9+" now, how did we not see this coming? If only we could have drafted him 47+ spots earlier."
Have you literally seen his progression? Or are you a Montreal fan who just started following his box scores when the NCAA season started? Hutson is having a fantastic year, about as well as one could hope. He was amazing value at #62, the type of high-risk, high-reward picks teams should make earlier in the draft. He's improved, as most players do at this age, but he's not that different than he was last year. He's an elite offensive defenseman putting up elite offensive defenseman stats on a top-tier team (just like last year) that scores the 3rd most G/G.
Unless you have some new source I'm not aware of they don't track NCAA TOI. But it's not surprising he's a top player on the team. He's an elite talent and the Terriers only had one offensive d-man (Fensore) until Hutson joined the team. He walked into a prime role and proved he deserved it. And have you considered how his playing more helps the stats you care so much about?
It doesn't matter who you would take him before. Go wild with how you'd draft him ahead of those guys. I have no desire to argue with anyone about where they would draft someone. I wouldn't have even responded.
But where you would draft him has zero correlation to what NHL teams would do in a redraft 7 months post-draft. Hutson was a better U18 player than most of the guys drafted ahead of him. NHL teams don't take a guy like Geekie ahead of Hutson because they think Geekie is the better current player. Teams draft on projection. They draft on biases. They draft on organizational needs. They draft on personal preferences. And so on. Hutson producing at an elite clip in his freshman season, just like he was during his draft year when he put up the 2nd most points ever in a season for a defenseman in NTDP history, while only being slightly bigger isn't going to completely redefine the way NHL teams scout or would have evaluated Hutson.