I predict that many of those people will continue to believe that up until human cognition is mechanistically understood, at which point there will be some other reason that humans are "real" thinkers and machines are not. The problem is that theoretical opposition to the existence of AIs is incompatible with materialism and thus just doesn't fit with our world, which is very much built using the scientific truths that materialism enables us to discover.
It is insane to me that views of consciousness and cognition other than physicalism still exist in mainstream scientific and philosophical discourse. As far as I can tell, no matter how much discourse you dress it up in, any alternative boils down to "it's magic, I ain't gotta explain shit".
