Oh no not another free will thread.

[GrandizerII]

Of course quantum randomness may actually be pseudo-randomness and ultimately be entirely causal. All we really know is that scientists aren't able to find the causes, and it doesn't seem causal.

My intuition is that all randomness is pseudo-randomness. The notion of the entire universe being causal, it's just some elements to reality (i.e. quantum randomness) are so strange that we are unable to pinpoint the causes... that's all more parsimonious to me than the idea that the universe mostly seems causal and to make sense but then on the quantum level it's acausal suggesting that what seems causal all over the universe is actually probabilistic. To me, causality makes sense of everything, it's more parsimonious to assume the universe as a whole makes sense... as the universe certainly does seem to be governed by laws that make sense. Gravity, the strong nuclear force, the weak nuclear force, general relativity, etc.

The way I see it... when things stop making sense that's a failure of us as humans....

Your view that quantum randomness is just a failure of explanation seems to be contradicted by science.  From Bell's inequalities we know that the underlying assumptions of such a view can't all be true (first citation), and that there is no way to improve the predictions of quantum mechanics by a significant amount (second citation).  This seems to point to a deterministic conclusion that quantum randomness is real, and not just an artifact of this or that bit of ignorance.

The Quantum Theory and Reality — The doctrine that the  world is made up of objects  whose existence is independent of human consciousness turns out to be in conflict with quantum mechanics and with facts established by experiment.

Can quantum theory be improved?

Bell's Inequalities don't apply to MWI, so randomness is still not necessarily inherent within the nature of this reality we see ourselves in.

The study in the second link ignores the MWI, it seems.