he could be streaky but that’s normal for goal scorers at any level. he was always fairly dangerous. even thought he scored less in the playoffs, he was still producing plenty. for comparison, Maxim Massé (UMass) scored 51 goals in the regular season but he only had 6 goals in the playoffs like Tournas. Still contributed elsewhere, his game got more well-rounded as the season went along. a current UNH example from a similar path is Sam Oliver, who can be streaky as well. if you were to worry about something... his ability to handle physicality has been an ongoing concern. it's hard to get through that in junior though, college is where he'll be able to make more progress.
tl;dr: you are probably overthinking it. even in the NHL goal scorers can be streaky. im sure it won't stop you from worrying, which is how being a fan works
speaking of UNH...
08 F Ilya Kolmakov commits to UNH, played for Sherbrooke Phoenix. 2027 Draft eligible, 48 points in 62 games. he moved to North America in 2024-25, played for Detroit Little Caesers 16U AAA with a brief callup to Fargo. He was drafted by Sherbrooke in the CHL Import Draft and was 3rd in scoring for the Phoenix.