Why is it stupid? He assassinated a guy that the US has been half-heartedly chasing for 10 years. I have yet to see Obama point to the killing as the totality of American policy. I HAVE seen him point to it as an accomplishment. And considering the fact that Bin Laden is the de facto reason/source/argument for our entire reason for being in the Middle East I think that Obama is right to point to that as an accomplishment. So I don't think that it's a stupid statement; I do think that perhaps you haven't thought about it enough. There will be graduate seminars based around the Bin Laden killing and its subsequent foreign policy products/ramifications.