You do understand that it's a joke, right? The Unitarians are the most cognitive, cerebral, unemotional, unexcitable church members probably in the history of man. Their church services tend to be like an accountant's book club meeting. That's one of the reasons it's funny.
Very funny! We athiests tend to appreciate Unitarians -- as long as those Unitarians are willing to accept that we live on a planet where few people are as reasonable as they are. How I wish that were not true!