French is an excellent, experienced coach who has won a Calder Cup in the AHL and coached and won at almost every level. He's probably one of the best coaches in the WHL and probably has the best resume of anyone in that league right now.
Calgary finished with the 3rd-best record in the WHL and the other highly-drafted guys on their team (Tambellini and Sanheim) had massive breakout seasons under French. And Jake Bean had a huge year as a 16 y/o.
Everything about that team indicates it's well coached. Aside from Virtanen flatlining. So as usual, when a prospect struggles, instead of putting the onus on him to be better ... blame the coach!
Otherwise known as the Vigneault-Ballard conundrum.