All of these recent Google+ changes, aside from "Real Names," only affect people with a large YouTube following.
I absolutely support you deleting your YouTube account in protest of the ever-increasing Google+ requirements. But at least call it what it is--deleting your account in protest.
I've got my reasons. I prefer it this way. It's beyond annoying that Google keep insisting on trying to link various accounts and/or grabbing my personal data. And the harder they pull, the harder I push back.
There's nothing that's changed my impression of Google, in a negative way, so much as using G+ and observing the commentary of its leadership (Eric Schmidt in particular, but Vic Gundotra and Larry Page as well). Yes, some individual Google engineers do tend to give me hope, but I'm seeing the fish as increasingly likely to have been rotten from the head.
That the company appears far preferable to Facebook I'd freely concede, but talk of damning with faint praise.