That doesn't even make sense. Rat/Tron/Guardians were greenlit by the board YEARS ago, money was allocated and budgets approved years ago, announced to the public years ago, and are in the near final stages of their construction. It would make 0 business sense to not finish and open them. They will need new signature attractions to promote for the next five years especially when faced with increased competition from Universal Orlando.
What is more likely to be cut are projects that haven't even started yet (SSE, any hope of a new tomorrowland for Disneyland) and smaller ancillary projects (Mary Poppins, Moana).