Privacy Analysis of FLoC
What bothers me the most about FLOC is that there is no reason or advantage for me as a user to run it unless I'm forced to. Cookies, even if they get hijacked for tracking, are genuinely useful to persist state and having them on results in a better experience. Even in the case of something more invasive like DRM/EME, I might want to turn it on in exchange to be able to watch some new show on a streaming service. Turning on FLOC brings nothing to the user in return and feels like charity towards advertisers.