There is no "next step" in evolution, nor any concern for what is or is not "detrimental for us as a spieces".
Evolution is much simpler, at its core: Is autism heritable and do autistic people leave behind more viable offspring than the non-autistic? Then the proportion of autistic people can be expected to grow, otherwise it most likely won't
Evolution is much simpler, at its core: Is autism heritable and do autistic people leave behind more viable offspring than the non-autistic? Then the proportion of autistic people can be expected to grow, otherwise it most likely won't