This would presume we knew what consciousness and pain is. We don't. We we are clueless. There is not even a starting point of a science here.

In this light your viewpoint is dogmatic. LLMs may help to offer a new perspective on consciousness and we should at least be open to that until some better theories arise.

We know what consciousness is, we don’t know how it arises.

Consciousness is being aware of something internal to one's self, or of states or objects in one's external environment.

We also know what pain is.