In the comments of a post on the Blasphemy Challenge, James Lazarus objected on the grounds that "It's purposefully insulting (when we don't have to be) and rather juvenile, at the end of the day." And just today, Ed Brayton called the Challenge "I think it's pointless, juvenile and stupid."
Let me suggest that this is not necessarily a bad thing.
Whether anything is gained by being as rude as the RRS sometimes is is, shall we say, debateable. But the sort of moderate rudeness expressed in the Blasphemy Challenge is a good thing. Why?
Simply put, many people find the mere existence of atheists offensive. Heck, some are at a loss to understand how anyone could doubt their particular sectarian dogmas. Once, when I was out with my "Smile! There is no hell" sign, I had a girl come up to me and look at me with sad puppy dog eyes and ask why I didn't believe in hell. From the look on her face, it was beyond her than anyone could doubt this dogma. Hopefully, a healty dose of rudeness will jolt such people out of their complacency.
I suspect Laz, at least, knows this. After all, he produces a show which wags the word "infidel" in the face of believers, I believe the site even used to have a thing telling believers that they're infidels too. Now, Live with the Infidel Guy isn't even close to being overboard, but it will certainly give some people a jolt, which will often be just what they need.