The Toronto Raptors gained extra attention in their title-winning playoffs run thanks to the presence of the team’s global ambassador, Drake. The Toronto Maple Leafs have many famous fans as well, without the addition of the sideline histrionics.
The difference between the sports is that fans can sit on the floor at NBA games. Boards separate the playing surface from the crowd at hockey games. This puts a physical barrier in front of the celebrities who come support the Maple Leafs, making their presence less visible. It does not make their love of the team any less meaningful.