Facebook's Download-Your-Data Tool Is Incomplete
This is a semantics argument.  Facebook considers "your data" things you uploaded to Facebook intentionally.<p>They do not consider "things people learned about you by watching you" or "things people said about you" your data, they consider it their (the watchers or speaker) data.<p>It's not all that different from how photography laws work in different countries.  If someone takes a picture of you, is it their picture, or your picture?<p>EDIT: Im in agreement this doesn't match up with GDPR.  Outside of Europe, facebook can treat "Your Data" differently, and the button can function differently in different places.