You say that, and GAs were used decades ago to design FPGAs to a spec. The evolved design worked perfectly on the test chip, so the design was copied onto a second chip and it failed. The logic gates were identical but the GA had utilised microscopic differences in the substrate and there were large areas of programmed chip totally unconnected to the main circuit. Without them, the first chip didn’t work any more.

There are likely quantum effects available at the size / scale of neurons, and it’s brave to say evolution wouldn’t exploit them if there was some benefit.