The voters did that, not the DNC.
You should admit that the GOP would have defined Hillary as an elite, out of touch, non-patriot who was going up against a war hero. And given the fact that she's ultra-rich and has been in Washington DC for most of recent history, they would have a much better argument about that then they do towards Obama.
The idea that he will be attacked any more effectively or roughly then Clinton would have been is farcical.