The point that the GP is making is there is no such thing as "effectively CA". CA is a specific academic term with a specific meaning; there's no reason to introduce it into the conversation if you're not going to follow that meaning.

By all means call this system a "ultra-high availability strongly consistent datastore", but it's still not CA.

(It's all the more disappointing that it's Brewer himself, the original author of the CAP theorem, that's engaging in this hand-waving).