Why is New York Islanders forward Mathew Barzal not suspended after slashing opponent Mason Marchment?

New York Islanders star Mathew Barzal has been fined $5,000 by the NHL for slashing an opponent. The incident, which resulted in a major penalty and ejection, occurred during a game against the Columbus Blue Jackets. Despite the penalty, the Islanders defended Barzal’s actions, with the opposing player admitting his own role.