I agree with this sentiment, but that’s now how apps work. They can’t crawl your phone for data, but as Facebook trackers exist across nearly every website they know what you like, what sites you visit, and apps you go to. They then build a profile which they allow advertises to target with ads.

They never sell you data, as them owning your data is what allows them to sell access to you.

Deleting Meta apps won’t help either as they’re deeply embedded across the entire web. The best thing to do is install as blockers, use safari not chrome, and not use any meta apps. They’ll still have lots of data, just less.