How many times a day are you shown ads that are completely irrelevant?

Me personally, I’ve never once experienced the “they’re listening to my mic for ads” phenomenon. I think someone would notice by now either by seeing increased upload usage or a hot device- at least with current technology. On device machine learning will make this much easier to analyze without having to upload audio.

Not that I don’t think it’s entirely possible to listen right now, I just don’t think it’s occurring to unimportant people. I’m not particularly important or rich nor is anyone I know. It seems much more plausible to me that we’re just seeing conventional web tracking get a lot better + a healthy dose of confirmation bias.