Great article. You rightly assume at the beginning of the article that this the current state. But you do not take into account the exponentiality of the pace of AI advancement. Finally, we still cannot agree on what consciousness really is. Therefore, it is plausible that the properties of consciousness may emerge in a digital machine in an entirely different way.
All of this based is based on speculation and as such some of your conclusions also fall in this category. But articles like yours advance our understanding of why AI consiousness if it emerges may be of a different kind than ours,