Trenberth's proposal to reverse the null hypothesis seems most potent in the context of a polemic designed to change the political balance in the climate change debate and further marginalize the ‘deniers’. As a polemic, the idea of reversing the null hypothesis is a strategy for scoring political points against skeptics. However, such strategies are likely to exacerbate skepticism and inflame the political debate, which can be counterproductive.I don't know what your cite was supposed to prove, but it doesn't even refer to the information we're discussing. Trenberth was talking from a scientific standpoint.
Second to last paragraph in the conclusion. And the reply wasn't directed at you.