Many leading scientists in artificial intelligence do in fact believe that consciousness is an emergent property of computation. In fact, startling emergent properties are exactly what drives the current huge wave of research and investment. In 2010, if you said, “image recognition is not an emergent property of computation”, you would have been proved wrong in just a couple of years.
Just a random example on top of my head, animals don’t have language and show signs of consciousness, as does a toddler. Therefore consciousness is not an emergent property of text processing and LLMs. And as I said, if it comes from computation, why would specific execution paths in the CPU/GPU lead to it and not others? Biological systems and brains have much more complex processes than stateless matrix multiplication.