While I don’t disagree I think the problem is in the execution rather than being more inclusive.
No one (generally speaking) rejected a black superhero, most of us even paid to see the film, no one (generally speaking) rejected a black princess, most of us like her as much as the other princesses, no one rejected Jungle Cruise (generally speaking) because one of the main characters was gay, it was just a natural part of the story, the problem (IMHO) is they’re changing characters we know and love rather than creating new ones, inclusion through subtraction rather than inclusion through addition.
I don’t know if the world is ready for a gay superhero or a gay princess yet, although I’ve read pretty compelling arguments Elsa was, but I feel pretty confident saying they’ll be much better received if it’s a new character rather than an old one they simply change.