“The Internet would be better if we had an accurate notion that you were a real person as opposed to a dog, or a fake person, or a spammer.” - Eric Schmidt
There are no dogs posting on the internet and there's no such thing as a "fake person". That leaves real people and spammers. There are lots of tools to filter out spam and you mostly see spam on websites that are just not using any of them.
So, if that's really the argument Google's chairman has for abandoning anonymity and pseudonymity on the internet, can't we all just move on now and not pretend that "real names" policies are anything other than sheer demonstrations of dominance by these services and politicians?