The benefit of FLoC is that you will need to go out of your way to track and de-anonymize your users. Yes, it can probably be done with enough data. But it is l

The benefit of FLoC is that you will need to go out of your way to track and de-anonymize your users. Yes, it can probably be done with enough data. But it is literally the simplest operation in the world with 3P cookies, so simple that tracking users across the internet may just happen on accident. That is unlikely to happen with FLoC.