The hype around Beck from Habs' fans is due to his 2-way game, no one is expecting him to be a huge point producer in the NHL so bringing up PPG totals in the OHL isn't very relevant.
Most fans are expecting him to be a 3rd line C for the Habs who can put up 30-40 points, while taking on tough matchups, killing penalties and winning key faceoffs.
The reason the Habs would be reluctant to move him isn't because he's considered a top prospect in the league, but because our depth at C isn't great and we don't really have any similar prospects coming up in the near future who can take on a high amount of defensive responsibilities. With Dvorak/Jake Evans UFAs after this year, odds are he'll be the Habs #3 C in 25-26.