> If we didn't move the goalposts, then by definition we already knew exactly where we were headed at the beginning, and we very clearly did not.

To me, the goalposts were already defined by the person you were responding to. "The impact of AI is getting undeniable", so, the goalposts are "the impact of AI". Probably something like "the impact of AI is high, or will be soon".

Note that this does not depend on things like AI sentience or defining "intelligence" more rigorously, it just depends on AI impact.