Take a good look at the new Terms of Service for the mastodon.social network — nothing in this network truly belongs to you anymore. The main point:

If it’s important to you to retain the right to revoke permissions for your content after deletion, the current version of Mastodon’s Terms (even though not yet enforced) does not protect that right. Moreover, the mandatory arbitration clause significantly limits your legal options in the event of a dispute.

Sensitive content Reveal/hide

Let's say an app tracked all of those things and opt-in allowed you to post them to a P2P system for storage and retrieval by you only (or published if you like) and associated with a profile that exists in that same P2P network (all this is possible and exists).

Is that app "collecting" data in the sense applicable here?

Clearly it's way different to the user, but what would the app have to say here?

@mubashirmehdiYou could teach them about the FediVerse, maybe in some form of "get-together".
Would that be something that could work in the area you are living?

@Tutanota