My typical view is that the solution to bad/inappropriate/wrong speech is more speech, not censorship.
I know it can be tiring to have thread topics rehashed, and to have topics derailed. But Creationism largely spawns from a difference in what is or is not considered evidence. How many Creationists have successfully posted evidence in support of claims in a science forum?
I'd rather have more debate opponents than fewer. If their definition of evidence is silly, then so be it - part of the point of the EvC debate is revealing ridiculous breaks in logic. One can hardly complain when an individual simply continues to help show a common flaw in reasoning.