As mentioned, this only applies to websites that are participating with “Topics.” Websites that don’t use the Topics API won’t receive any of this information from the browser.
This is a much less targeted and more general version of FLoC. There is a comprehensive list of 300 topics that can be assigned to a user by Chrome. The good news is the list of topics does not include things like race, gender, or sexual orientation.
Google will allow the user to see the topics that have been associated with individual browsing habits. If some Topics don’t interest you as a consumer, you can remove them in Chrome.
Is there a way to Opt-Out?
Google just kicked things off this month. The developer trials of the Topics API are underway. Websites will have to implement the API tool. And do their own individual testing.
One of the things users liked about FLoC is that you could opt-out of it.
The short answer is other than disabling some Topics we don’t know if you can opt-out of its replacement. At the time of this writing on January 26, 2022, the exact details haven’t been released. And it is uncertain if the Topics API will be enabled by default. Expect more information to be released soon.
