The Third-Party AI features are not available to everyone yet. The features are in alpha and are only available to customers on Dropbox Professional, Essentials, Business, Business Plus, and some customers on Dropbox Standard and Advanced.
If you're on a Basic, Plus or Family account, or you're part of one of the other groups that don't yet have access, the Third-Party AI features won't be available to you.
By the time it appears, it will have been "on" for some nonzero duration before you switch it off, so I guess they could already have irreversibly vacuumed up your existing data...
Closest I can think of is "FOIPP" (Freedom of Information and Protection of Privacy) in Alberta at least (not sure if the rest of the country has equivalents). But that's mostly things like "you can't share this confidential email with someone else without my permission" kind of thing.