[naner]

Of course that may be YouTube (and Google's) whole point for making this change. "skipro865" calling you an "ugly douchebag" doesn't quite have the same feeling as having "George Jones" call you an "ugly douchebag".

This is almost certainly not the case. If nasty comments were problematic Google could ban badly behaving users or take other measures. Accountability and identity are not the same thing, Google is pushing for identifying you not making you more accountable. Google has other motives likely related to building more accurate profiles for advertising and building out Google+.