I think the issue is that AI folk believe that given enough computer power they can somehow replicate all the brain can do and create the capacity for conscious

I think the issue is that AI folk believe that given enough computer power they can somehow replicate all the brain can do and create the capacity for consciousness and qualia in what is essentially a machine doing mathematics. This assumes that a certain level of computation suddenly can give rise to consciousness, which is currently the least understood part of our biology. But there is no evidence that we can do that. Maybe it is possible, but there is as yet zero data, nor a proven theory that says computation leads to consciousness. Of course, you might say that is like attributing a certain magical underpinning to consciousness and there is no reason to believe magic exists. But is there a logical, rational, tested theory as to why a certain level of computation should and will lead to consciousness? It's a claim that is made, I think, with a simular amount of emotional and irrational vigor as those that say that AI will never be able to mimic the brain/mind/consciousness. Personally, I think, if it is possible, it won't happen any time soon.