That is only an article of faith. Is the initial bunch of cells formed via the fusion of an ovum and a sperm (you and I) conscious? Most people think not. But at a certain level of complexity they change their minds and create laws to protect that lump of cells. We and those models are built by and from a selection of components of our universe. Logically the phenomenon of matter becoming aware of itself is probably not restricted to certain configurations of some of those components i.e., hydrogen, carbon and nitrogen etc., but is related to the complexity of the allowable arrangement of any of those 118 elements including silicon.
I'm probably totally wrong on this but is the 'avoidance of shutdown' on the part of some AI models, a glimpse of something interesting?