Yes, but it is unlikely to succeed. The problem is that it is an unstable strategy. FLoC is strictly worse for privacy-conscious users if trackers don't change

Yes, but it is unlikely to succeed. The problem is that it is an unstable strategy. FLoC is strictly worse for privacy-conscious users if trackers don't change their strategy, and it is also strictly worse for trackers to stop using their current tracking techniques. It is a bit like the prisoner dilemma.