It's not a good analogy because the ball is constrained inside a court with fixed rules about how it can travel. No one can predict accurately how AI is going to change things. Look at all the predictions so far. We have the whole spectrum from "the end of humanity" to "utopia".
We might not be able to precisely predict where the ball will move, but I think GP is implicitly saying "don't assume the ball doesn't move", which IMHO is kind of baseline, but seems to be over the head for some people that are now complaining.
Some of those complaining today are the ones who keep saying "LLMs are just stochastic parrots predicting the next word", "how can AI do math if they can't even count the number of 'r's in strawberry?", etc.
It doesn't take a genius to realize AI will start getting better and possibly become a "threat" even before all this mathocalypse stuff happened.