Odds are Chapek decided to cut costs by not spending on any advertising for the film (rather than bloat the budget even more for this when it bombed). On top of that it's been speculated that the inclusion of a gay main character gave Chapek even more cause to want to bury the film (so as not to add more ammo to the anti-LGBT conservatives already mad at him after the Disney employees forced the company to speak out against the Florida bill).