For a player's morale who spends months preparing for the season and then gets injured in the second game, it's devastating. Fortunately, his coach and teammates are there to lift his spirits, and that's exactly what Martin St-Louis explained.
Dach is present because he needs the team, and the team needs him. Making sure he feels involved, even if it's not on the ice, is an excellent way to keep his spirits up. Personally, I love it!