So should every every metaphor be voted down? Or just personifying metaphors? Or just metaphors mentioning deities?

I figure this particular one strikes some as a bit iffy since the metaphor is so close to the salient metaphor the actual creationists are using and treating as a non-metaphor. Metaphors, like "God wrote life", closely associated with unsympathetic real-world groups tend to carry a bit extra baggage. The matter is of course confused further by the original context where this was written as a response to creationists.