If FLoC is opt out by default as many here claim, is this news saying that Github did nothing? Also if it is opt-out by default I guess it will be simple to se

If FLoC is opt out by default as many here claim, is this news saying that Github did nothing? Also if it is opt-out by default I guess it will be simple to see who has opted-in, a nice list of shame. Does this circumvent the EU cookie laws?