That assumption is too simplistic. If the algorithmic behavior was indistinguishably human behavior, and carried out by humans, it would just be human behavior. Of course machine translation doesn't pass the requirement for human behavior. Nothing does, except humans. And if newer machine translation does pass, I'd say that's humanly accomplished, by use of tools.

Nobody could learn a distinct language from nothing but a dictionary, enough to fool a native speaker. The assumption is ridiculous. The dictionary isn't conscious, either way.