This definition of consciousness, that there is some internal state that can change based on input, and changing this internal state leads to different behavior

This definition of consciousness, that there is some internal state that can change based on input, and changing this internal state leads to different behavior, is problematic. So is a definition that defines consciousness as responding to identical stimuli in different ways. The whole problem is that consciousness as a concept is poorly defined. I do not think the people the believe inanimate objects have "consciousness" believe consciousness necessitates thought, or even internal state.