The word is meant to be general. If you meant to make a broad generalization, be sure you can back it up. If you can't just use a more specific term, like the kind of theists you think are cowards, but it'll still be fallicious.
"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