That's true, there's a lot of exposure on the typical iPhone or Android device, lots of installed apps, lots of collected metadata.
I was kind of picturing people en-masse becoming upset with this stuff, and having real/better/open tools available for them when that happens - stuff like a slick pinephone running mastadon over matrix over tor, or something, etc.
I guess I threw that comment out there because it seemed like going after the metadata seller that crossed a line leaves all the other metadata sellers in business, and free to push the line further along. I was thinking it would better to address the root cause - giving people better security and privacy.