Things regarding nudity, etc. -- does he not realize Facebook has the same rules? You can't post a profile pic of your buttocks on Facebook. Dirty content or under-age user gets profile deleted, news at 11. At least I can "sign out" of Facebook, ha ha, didn't you start off the article bawwwwing over how prevalent Facebook Connect is?
Anybody that uses Facebook or Google+ has already deemed the above risks as acceptable, so none of this is really an issue for them. The benefit we all get out of two major social network players is that there's at least a chance that they will try to play nicer with their users out of fear that the competition will start to pull ahead if they don't.
The real endgame that I'm hoping for is that Google promotes some majorly open APIs for integration between social networks, kind of like Diaspora was except now done right and with major backing, and then social networking becomes a decentralized and commoditized service the way blogging is now. (Then Google wins, because their search engine is the center of the universe again, and the social web is just a commoditized paper canvas with their ads all over it.)