If someone says to me "consciousness, therefore god", what's the best way to respond?

[Neo-Scholastic]

I haven't heard anyone flat out say "consciousness, therefore God". That said, I see nothing wrong with pointing out that despite 100 years of speculation materialism has not yet fulfilled its promise to deliver a robust theory of consciousness. Nevertheless that hasn't stopped some from insisting that 19th century physics will supply one...someday, eventually. Since other routes to a solution are available, I can only guess as to why so many atheists feel challenged by non-reductive solutions that do not directly entail anything Divine.