This keeps being thrown around. Disney has always been in control of the narrative. Always. If they wanted to make a Brer Rabbit movie tomorrow that was more culturally appropriate, and wanted to tie the current ride into that, they could. Disney’s most staunch supporters, the ones that actually care and are excited about the current decision, would support it because they support every new thing the company decides to do.
But Disney won’t. Why? Because Princesses are in their top 4 highest grossing franchises. Brer Rabbit is not even close. Even if they try to make it relevant again, there isn’t a guarantee the project would succeed, nor is it likely that potential merchandise would come close to what the Princesses sell. Disney is very risk averse when it comes to anything outside the core 5 brands.