I think most people criticizing this article are completely missing the point. The computer based on enzymes is not being built to compete with your desktop. It doesn't matter if its basis is unstable and slow. Bsw149 attempted to make this point but was mostly ignored.

-Imagine your cells in a certain organ system alerting you that the concentration of a needed medicine has fallen too low.
-Someone with Diabetes could get a read out of sugar concentrations without taking a blood sample.

From the article it definitely seems anything useful is a long way off... But I'm guessing the people involved aren't looking for a way to get more fps out of quake.