Well you prompted me to check whether I understand what "absurd" and "ism" mean because it seemed pretty apt to me. Still does after checking, at least for the standards of a comment on an article, as opposed to say a language semantics journal.

Being popular gives us the "ism" part, by definition 3 at http://en.wiktionary.org/wiki/-ism :

"a tendency of behaviour, action or opinion belonging to a class or group of persons; the result of a doctrine, ideology, principle, or lack thereof"

The "absurd" part also fits pretty well: http://dictionary.cambridge.org/dictionary/british/absurd "stupid or unreasonable; silly in a humorous way"