“The question of whether Machines Can Think is about as relevant as the question of whether Submarines Can Swim.”
— Dijkstra
Turned out 404 didn't mention it because the paper never defines what LLM's can't achieve. Quoting from the paper: "A key insight from our contribution is that resolving the present uncertainty surrounding artificial consciousness does not require a complete and final theory of consciousness."
As you say, Dijkstra neatly penned a response to arguments that don't define their terms in 1983. They are exercises in linguistics, not science or engineering.