That is what I got from the previous article as well. However, from reading Kurzweil's article get that this point is irrelevant, because he never suggested to reverse engineer the brain in that way. He used the genome argument as an estimate on how complex the brain is, basically viewing the genome as a data compression of the brain.

Myers argument only shows that the decompression algorithm, i.e. the route from the genome to brain, is insanely complex, but it doesn't say anything about the actual complexity of the brain. So in essence, yes, if we would choose to model the brain in a highly compressed form like the human genome we would potentially need a computer that could model it's own subatomic physics, but that's not likely the way we would want to approach this.

Anyways, this doesn't mean that the brain isn't very complex and impossible for us to model at the moment. They main question is how long it will take for us until this complexity is manageable (if ever).