Because a lot of things get discussed here with a superfluous "rational" or "rationalist" attached. Of course the joke would have been much better if the author had written a longwinded article with lots of citations and math involving Bayes' Theorem and UDT, and as it is it probably deserves to be in the negative.

On the other hand, maybe they really just did want to remove warts (rationally, of course.) It's a crazy world out there!