Yeah I understand that they are doing only a categorization of the ads they are showing, without the marketers being the ones to choose their targets, and so fr

Yeah I understand that they are doing only a categorization of the ads they are showing, without the marketers being the ones to choose their targets, and so from the Google point of view there should not be any data leakage problem... I see that in theory you could game this system to play on the type of ads URL you send to each category, and thus try to indirectly get information about the IPs that visit your site, but I'm not sure how it is a viable strategy, how much mitigation is already in place by Google against that (surely they have thought about it), and how many marketers are ready to go theses lengths or even if any has already done it (Cambridge Analytica did it on FB, but arguably that was an easier system to game).