Argument to moderation. "The truth lies in the middle" is a false axiom. Sometimes it's either in the black or the white.
Your reply strikes me as a fallacy fallacy. It's not a logical fallacy if it's not used to support an assertion. In this case, it is the assertion.
http://lesswrong.com/lw/mm/the_fallacy_of_gray/
Argument to moderation. "The truth lies in the middle" is a false axiom. Sometimes it's either in the black or the white.