Google can't win? Their idea of removing third party cookies was on the condition everybody would accept FLoC, so Google still makes money while everybody else doesn't. Yes, it's an antitrust concern.
You spread misinformation. Any ad company can use FLoC.
Let me be very explicit for you: privacy advocates say 3rd party cookies are bad b/c they allow tracking yet the eu blocks google from removing them b/c they think it might hurt their own ad tracking companies.