the internet would be better if we knew you were a real person rather than a dog or a fake person. Some people are just evil and we should be able to ID them and rank them downward.
This is a ridiculous argument. How often have you wondered, "Is this person I'm talking to really a dog?" Of course it's a real person, even if he goes by a stupid name like me.
If Google is really trying to build an identity service rather than a social network, they need to come up with better arguments than this as to why that's a good idea.