The real names solution to abuse is often bandied about here, but it hasn't stopped garbage on facebook and it has a fundamental flaw in the logic behind it: It assumes all people have shame and that can be used to make them behave. Many real people don't, and they are the ones least likely to censor themselves by attaching a picture of their face to what they post. And a normal person is probably not going to want to interact with those people without the distance provided by being pseudonymous.
Moderation was probably the wrong word, more in the sense of controlling faked content posted by accounts that are not real people. Managing Alex Jones official account is about the same, but fake accounts/bots become harder.
Not really? That lets you defeat sockpuppets without having to use proxy information like IP, but there are plenty of people who will post appalling stuff or extravagant misinformation under their real names. See the ongoing Alex Jones libel trial.