Considering most all other parks are not requiring masks indoors leads to most guests not expecting masks to be required indoorsI think it’s very dependent on where you are living. Where I am everyone still generally masks up inside stores. And kids are still wearing masks in schools. It wouldn’t be unreasonable to think Disney has the same protocols at this time.
Furthermore some people would probably feel less at ease without safety protocols at a crowded place with people from all over like WDW than they do at their local grocery store.
Note: personally I don’t care if WDW got rid of masks ASAP. Wouldn’t worry or bother me if I were there. But I think some here are overselling how commonplace it is that mask mandates have stopped. There still a lot of places that have them in place and a lot of people who would feel uncomfortable without them indoors.