[wnoise]

It's not literally saying QM is false in the sense of "gives wrong predictions", but it is saying it is not "what is really going on", because it is incomplete.

> it would render everything pointless as our paths are predetermined

The objection is subtler than this. It's that it's pointless because it's not a productive stance. Science is in large part about predicting results of interventions. It throws its hands up and says everything happens for essentially conspiratorial reasons, and taken fully doesn't admit the possibility of interventions. Further this is stronger than the normal determinism of classical mechanics -- there, even if we believe in determinism, nondeterminism with respect to unobserved things (such as experimenters brains) is a useful stance for discovering truths about the universe. In contrast, with superdeterminism, any possible "intervention" in this stance is "compensated for" by the initial conditions. It explains quantum mechanics only by saying "initial conditions did it", which is no better than "God did it" of medieval philosophy. In neither case can we usefully ask further questions.

[Grieverheart]

If you go down that route, you can always dismiss objective reality. There is no way of knowing that what we experience is actually happening. But we still assume it does. The same holds for superdeterminism. You can say we have no way of knowing if what we measure is not a conspiracy, but that doesn't hinder us from doing science as we know it.

[akvadrako]

Without conspiracies it isn’t superdeterminism and you won’t get the right outcomes.