Do really large people need special bathtubs/showers to keep water from getting everywhere?

Hi! I’m trying to figure out if my anti fat biases etc are colouring my view. Background: I’ve lived in an olderish apartment (1970s) for about a decade, got a new upstairs neighbour a couple of years ago and now my bathroom ceiling leaks, grows mold etc. The maintenance folks have cut through the drywall a few times,...