I believe that the author's final point is that emphasizing the reasons why Obamacare is unconstitutional, would help the candidate who is doing the emphasizing, win both the nomination and the Presidency.
"The social contract exists so that everyone doesn’t have to squat in the dust holding a spear to protect his woman and his meat all day every day. It does not exist so that the government can take your spear, your meat, and your woman because it knows better what to do with them." - Instapundit.com