I would assume this was always true. Even if RCID was doing inspections, nobody involved would want an issue to show up first as part of that inspection no matter the relationship.
Is there any source beyond this one side blurb in the CNN article? It's attributed to "a source" and "DeSantis said" and without any references or direct quotes. Things that lose a lot of nuance and details.
Do we even know if RCID was doing pool inspections instead of some other entity and what the change might include? Unless the change is to an entity willing to push boundaries for alternative reasons, it's not likely they're going to start shutting down pools "just because". I would be surprised if Disney internal controls were not already stronger than any state level criteria.
On the flip side, if it reduces RCID expenses that will free up some cash for new lawyers without impacting other services.