Zach Hyman has singlehandedly nearly outscored all four of Auston Matthews, William Nylander, Mitch Marner and John Tavares over the past 3 playoffs combined.
Toronto's "Core four" of Auston Matthews, Mitch Marner, William Nylander and John Tavares have blended for a total of 34 goals and 85 points over a combined 95 playoff games over the last 3 years. Obviously, it's easy to see why fans are still so upset following Hyman's departure.
Going back to the 2020-21 season, Hyman's 33 points in 43 games made him too expensive for the Maple Leafs to afford, and he was let go for nothing as a free agent in another in a long line of Kyle Dubas' "own rental" examples.