White man here, with a skill based job in a hot industry: I'm guessing you might be too (or relatively similar)? Possibly even living in an accepting area of the country
YouTube is now requiring you basically own all content publicly. For people like you and I, this isn't a problem: We have a job we're not going to be fired over for being a little odd, have a different political opinion, showing off a skill we obviously spend a lot of time on, or having certain hobbies.
For the vast majority of people: This isn't the case. They can be fired for being odd (G+ Post: "Mr Corresation's star fox cosplay outfit") as it's just weird, and customers googling them find it. Their boss may find out they're a liberal when the boss is a conservative, and find out they're saying some things that are out there. The boss may find out they play D&D and are an accountant and he may decide this goes against his christian values.
It's a matter of "non-sanctioned identities". I'm a white, 30 somethings vegetarian with moderate views on a ton of things, who plays table top RPGs regularly but on a firmly adult schedule and attends a huge local convention about these things. This is all you can discern from my G+ and I'm worried about it. I'd far prefer to have an anonymous handle "BLAH BLAH 1979" and google not feel like my identity needs to be slathered all over my hobbies.
Now take that anxiety, and apply it to all the transsexuals, closet wiccians, in the closet gays and lesbians, hidden area tattoo fans, subscribers to odd philosophies, only slightly out there conservative philosophies (doomsday prep, huge gun collections), video game players, buffy the vampire game fans, historical reenactors, and all the other freaks and geeks out there. Or even a "stereotyping beating minority" (aka, the black man in a mostly white firm who dresses exceptionally well so white people think "he's one of the good ones" and hides his hip hop appreciation, or the executive woman who hides the fact she's a mother while actually caring about some mother/parent issues on the weekend) who'd prefer to not bring that up at the office.
G+ screws up all this when it's brought into that area. I can use it, you can use it, the mostly "white guys in 20's and 30's who work at google" can use it, but it really screws up a lot of the promise of the internet for other people who don't have it so easy.
Sorry about the long comment, trying to reach out to someone possibly like me who just sees the bad stuff going away (the outright bigotry, etc), but doesn't really notice the bad stuff coming in (the outing of everyone's private life).