What does "for decades" mean? That in 2000 we knew "LLM require outside input"? We didn't even realistically have anything worthy of the name LLM until 3-4 years ago, so what decades are we talking about? Up until know we didn't have any potential AI threat or people in the field worrying about practical AGI either!
Obviously any concern isn't about the AI that required outside input and interpretation to avoid collapsing under their own weight, but about ones that can produce their own input and experiences, even directly outside, as in the robotic bodies considered.