Lol, not even close. Jimmy Kimmel received the care he did for his son because he has money and health care through work. Kimmel is not receiving care because of obamacare. If he were in a position to require care, he would realize it is not even remotely on par with what he is receiving. With Obamacare for example, many doctors will not see certain patients. His credibility is being entirely pushed on the basis that his child was sick. While it is great his son received the care he did, for him to think it has anything to do with obamacare is just naive. 
I welcome and encourage him to continue raising awareness to issues but he is far off the mark. US has the highest spending on healthcare because it is advancing healthcare for the world. Look at how many healthcare developments come from the U.S. vs. every other country in the world. It is expensive when they subsidize everyone else.