There are isms, beliefs, positions, all different kinds of classifications. Just like the taxonomic rank/classification you are so fond of using. you can argue it's usefulness from your perspective, but they're all words and we use words to classify things.
"There ought to be a term that would designate those who actually follow the teachings of Jesus, since the word 'Christian' has been largely divorced from those teachings, and so polluted by fundamentalists that it has come to connote their polar opposite: intolerance, vindictive hatred, and bigotry." -- Philip Stater, Huffington Post
always working on cleaning my windows- me regarding Johari
always working on cleaning my windows- me regarding Johari