It's dumb in multiple ways. Like yes, we continue to develop ways to communicate how we feel, but pain has existed far longer than English. A newborn baby can experience pain. Since when did the ability to communicate become a requirement to feel pain? If you think too much about the converse of that question: "is communication enough to prove the existence of pain?", you forget that sophisticated communication is not even necessary to prove subjective experiences, it's just, that's all these fucking models do is talk, so it has to mean something, right?