As MacDonald notes, the New York Times has been egging them on with "news" stories whose political bias and faulty analysis have twisted the truth and fueled the controversy, and set the group-think tone for much of the rest of the American media.
While it would be a formidable task to check every study Wagenaar et al. subsumed in their meta-analysis, a quick check to find out whether they included a study with a known systematic bias reveals the study included Chesson et al., a study by the Centers for Disease Control which claimed that increased beer taxes could reduce the rate of gonorrhea.