From a quick skim of that response, it reads to me like Walker admits to and agrees with at least some of the criticism.
But it also looks like he ignores some of the more damning accusations, like cutting out parts of graphs that don't support his theories, being incorrect that the WHO has declared that we have a "sleep loss epidemic", and questions about where he actually earned his PhD (which he seems to continually misrepresent).
So yes, he seems to have responded to the criticism, but IMO not really addressed it to a satisfying degree.
But it also looks like he ignores some of the more damning accusations, like cutting out parts of graphs that don't support his theories, being incorrect that the WHO has declared that we have a "sleep loss epidemic", and questions about where he actually earned his PhD (which he seems to continually misrepresent).
So yes, he seems to have responded to the criticism, but IMO not really addressed it to a satisfying degree.