If they weren’t charging admission, or were offering discounts, then there would be no problem.
Sit a healthy Kawhi Leonard as often as you want. Keep him encased in bubble wrap until the playoffs if that’s the only way to have him ready to go.
But last time we looked, NBA teams, including the Raptors, are charging admission, they aren’t offering discounts when top stars don’t play, and they are receiving billions in television revenue to showcase world-class talent.