I agree with the other poster that I normally see sane things written by you, so I don't totally understand where this is coming from. Moreover, why is this being held to the top of this comment section? (I guess the subject brings in people that agree) To respond:
First, it doesn't follow at all that the only reason to include a real name is to correlate online activity with your real life person. For instance, the reasoning could be exactly what they are saying it is.
Now, there's no reason to trust corporations (large or small, startups certainly aren't white knights in this area), but that does not preclude that as a possible answer.
Second, do you honestly think, after keeping your email account with google for (presumably) 7 years and doing every single web search through them for 11 years that they need some "authoritative method" to figure out your identity?? I could see if you're starting an account today, but your conclusion here just makes no sense at all. You trusted a freaking privacy policy for all these years, but now that they offer pseudonyms for google+ accounts, the only possible conclusion is that they are now partners with the NSA to do....some unspecified evil?
I'm trying to stay civil here, but I feel like I'm taking crazy pills.