TLDR the singularity hasn't happened yet so it will never happen. Typical low quality technology "journalism".
"For starters, biologists acknowledge that the basic mechanisms for biological intelligence are still not completely understood, and as a result there is not a good model of human intelligence for computers to simulate."
Duh. We don't know how the brain works yet. A big chunk of The Singularity is Near deals with how we build that understanding. Once we know how the brain works, computing will take advantage.
"For starters, biologists acknowledge that the basic mechanisms for biological intelligence are still not completely understood, and as a result there is not a good model of human intelligence for computers to simulate."
Duh. We don't know how the brain works yet. A big chunk of The Singularity is Near deals with how we build that understanding. Once we know how the brain works, computing will take advantage.