It's been uncovered, that Google's motive behind this simply was to compete with Facebook, apparently, Google already being the Hitler of the internet isn't enough for them, they have to get in on the social media bandwagon as well: they launched Google+ a few years back, saw nobody cared, let alone even used it, so they figure since everybody uses YouTube (which I do believe is pretty much Google's biggest asset), they'll just sync a forced Google+ account to everybody's YouTube account, so that way, all their activity (commenting and sharing in particular) will be done through Google+, giving Google the satisfaction of saying, "Hey, now we're the biggest game in social media instead of Facebook! Look at all this activity Google+ has!"
The thing of it is, for everybody who's spouting out against this are actually only feeding Google's appetite: for every one of those, Bob's Army comments, or swastika, or entire movie scripts, or entire novels, or penises, or even people just up and complaining about the Google+ comment system are contributing to the activity on Google+, which is what Google wants... if people really want to hurt Google, they need to stop commenting altogether! I disconnected Google+ from my goof-off channel (I still have it on my official channel, unfortunately) and don't comment at all, because I have no use for Google+... what people need to do is disconnect Google+ from their YouTube accounts (and it can be done), and just resist the urge to comment on anything, then Google+ will experience a dip in activity, Google will see that, and that will get the message across to them that people don't like this setup... because, again, Google isn't even taking into consideration what we post, all they're paying attention to is that we are posting, which shows Google+ has activity, which is what they want.