Consciousness is the most recent module, and that does mean that. I'm sorry, I thought this was one point that wasn't even in dispute. It was laid out pretty clearly in the Evolution Sequence:

Complex adaptations take a very long time to evolve. First comes allele A, which is advantageous of itself, and requires a thousand generations to fixate in the gene pool. Only then can another allele B, which depends on A, begin rising to fixation. A fur coat is not a strong advantage unless the environment has a statistically reliable tendency to throw cold weather at you. Well, genes form part of the environment of other genes, and if B depends on A, B will not have a strong advantage unless A is reliably present in the genetic environment

Evolutions Are Stupid (But Work Anyway)