I have no inside information, but I always assume the tickboxes that "disable ____ data" from Google/Facebook/OpenAI just disconnects it from your own account, not hides it from the provider.
Aren’t they usually phrased very specifically as “we collect this data and use it to show you relevant ads, you can opt out of us showing you relevant ads”?
The checkbox has an actual statement associated with it about what it does. You don’t need to assume anything.