It wouldn't just be facebook though, it would be all facebook's apps (Messenger, WhatsApp, etc), plus all Google's apps, Amazon, Fortnite, Spotify, etc, etc. A single 'Freedom' store with all that on it would have huge pull and would completely undermine the effectiveness of the App Store's privacy policies. No thanks.

This doesn't happen on Android because Google has no interest in enforcing strict privacy policies on the Play Store.