Is that "obviously" true? Like if they had ad targetting and also let buyers of ads see aggregate results of impressions or something, that might already fall i

Is that "obviously" true? Like if they had ad targetting and also let buyers of ads see aggregate results of impressions or something, that might already fall into user data being sold, right? At what point does user data stop being user data? I don't think aggregation is enough in some of these discussions, but maybe I'm wrong.