I agree that they're changing their policy, and that it has been—and always was going to be—a painful process. But the failures of their original policy get splashed across the Internet every few months. So they can either stick their head in the sand, pretend it's not the problem it always has been, and watch their community get turned into the world's largest bastion of hate speech, or they can fix their mistakes and clean house. Are they doing a good job? Not particularly. I don't think they really know how. But they'll figure it out eventually. Hopefully meanwhile not fucking everything else up, too.