We could do the same exact kind of exercise to show Clinton was a Republican or Bush was a Democrat (yes, really). Most of your examples may just as well point to ineffective leadership - not ideology. And some stuff, like pretending Romney's health care plan is a Republican idea, is just specious. It's like saying Don't-Ask-Don't-Tell and DOMA are Democratic ideas since Clinton signed them.

Certainly Obama has not lived up to the hype and undefined and abstract hopes of his admirers. Also, Bush was not that partisan, but he did pursue unpopular policies. As evidence consider his attempt at immigration reform and his signing of Ted Kennedy's No Child Left Behind.