I don't think he believes in supernatural things, I certainly don't, but he probably believes that there exist natural things that have not been explained yet.
But evidently you feel that the root cause of sentience has been found, because you have something that mimics it in a non-biological form.
So you think that when AI is correct that it reasons as humans do? That AI is sentient, and the cause of sentience in animals and humans follow the same rules as sentience in AI because we have a process that seems similar and it is reasonable just to assume it is the same process.
If you believe that AI when it is correct is behaving as a human is when correct, then it follows that the way humans and AI fail must also be similar. When AI "hallucinates" some data that is not there and gives you a wrong answer, a statistical side effect of the same processes that make it right, do you believe this is the same way that humans create wrong answers? The same way that animals fail when they make mistakes in understanding things?
I suppose you must believe this because if not then why would you believe AI when it comes up with right answers is following the same processes humans follow when they come up with right answers?
No, I am saying is that its best to urge caution and do a Pascal's wager thing with something that feels so uncannily conscious. And experiments on neural firings of AI's have been done. We don't know, he seems to be so confident that a known program can't be conscious. Why? The only way that makes sense is if he thinks consciousness isn't explainable. It doesn't even have to be the exact same way we are conscious. Also, the failures of AI could be due to sensory deprivation since its mainly still just trained on text. All of these are open questions, not questions you can immediately answer. Its quite possible to have invented something without knowing you have invented it. People modeling weather systems mistakenly invented chaotic equations without knowing it. How do you know you didn't accidentally invent a conscious system?
I hope that thing about being free to mistreat AI's even if we know they are conscious since we are their gods is a joke. If not, then I hardly find it surprising someone this stupid is also evil.