I guess I could be wrong but I don't see OpenCL as dead. You usually hear about CUDA more because it's being marketed and agreements signed between Nvidia and the company using CUDA. I know quite a few organizations that utilize OpenCL.
We're not criticizing ICANN based whether or not they can follow the rules they imposed. We're criticizing them for creating such strict rules that seem to cause more damage than good. There are so many scenarios where this can go wrong, and some websites/domains are the most valuable things people have. There's also no way easy to protest this either.