Yeah, they were the worst that ever happened to (obligate) anaerobe organisms and their rise was probably one of the major disasters in earth history, as far as I understand it (IANB), hitting hard on a up to then succesfull survival strategy. Turned out quite well for us, though.
This, however, emphasizes the problem of valuing survival, over human-like intelligence, as an indication for intelligence - it's more or less chance. In a highly interconnected, changing system survival depends on situational (chaotic?) factors. That is all fine, but how this is connected to any sensible meaning of "intelligence" is not clear to me. Survival indicates solely that: being good in surviving. This results in a reliable chain of transmission, but this is not intelligence.
If Mr. Barbalet thinks A.I. is about reliability of transmission or survival that is fine with me, but then please call it not "intelligence", but "(artifical) system stability" or "(artificial) transmission reliability".
p.s. to GP they can be quite harmful to animals (including humans).