It’s all about money. There is no science without funding. Instead of typing up a storm, here’s a list of suspicions:
* Was this a “commissioned” study with the outcome decided before the data was collected in order to appease a benefactor with an agenda?
* Is this a means to cover up liberally biased funding? What about liberally biased science?
* Was this designed to give people a quick “Gotcha!” article to cite (Trust the science!) in order to sway public opinion and silence people who argue that there is a liberal bias in media?
Or it could be none of those things and may just be one more paper for the publication count. You just have to consider who has what to gain from a study with poor data and a decisive conclusion on an arguably subjective but very political topic.