I think the key is the "about you" part, not the "selling data" part. Based on the rest of the statement, your personal information (name, age, location, personal files (uploads/downloads), that kind of data) isn't shared, which is what most people would think of when they hear "your data". It sounds like the information they do share may be associated with you, but isn't about you in the colloquial sense - even if it is about you in the legal sense.
>I think the key is the "about you" part, not the "selling data" part
They're certainly attempting to articulate that as a conceptual distinction, but I don't think that division is as real as would be implied by trying to separate the one thing into two different words. Aggregated data is "about you" too, in many of the senses that matter in the context of privacy, and I would reject attempts at conceptualizing this into two things to imply otherwise.
