Fair point. Indeed, not everything needs to be scientific. Though for empirical claims that science is capable of addressing (as opposed to, e.g., what is morally right), claims that are based on sound scientific reasoning are more worthy of attention than claims that lack such a basis. I consider Princeton's claim to be one which fits this criterion: It is empirical, and it concerns a topic which is amenable to scientific inquiry. Therefore I find it appropriate to critique the claim in scientific terms.