The current leading materialistic model of consciousness is essentially that human consciousness is a computation in itself, and that the brain is basically a very very complex computer. So it's not at all illogical for someone who holds this view and who fully understands that AI is just a regular computer program to also believe that it could be conscious.
Of course, I'm not saying that you have to believe any of this - even defining what consciousness is is famously elusive. And there are a lot of people who think consciousness is not materialistic to begin with, or that we have not yet discovered the scientific nature of it.
Of course, I'm not saying that you have to believe any of this - even defining what consciousness is is famously elusive. And there are a lot of people who think consciousness is not materialistic to begin with, or that we have not yet discovered the scientific nature of it.