Fighting isn't a "sideshow", as many new hockey fans see it, but rather as a way for players to police the game themselves after a dirty hit or play, specifically if it leads to an injury of a star player. It is a way for teams to ensure that players don't get to take free shots or liberties with players like
Connor McDavid,
Nathan MacKinnon and
Auston Matthews - hence why the Leafs went out and signed
Ryan Reaves this off-season and why they brought in Wayne Simmonds a few years ago. The goal of fighting in hockey is to protect the team's star players and to send a warning to the opposing team that there are no free shots allowed.