Quantum nonlocality: How does nature do it?

I am not a PhD nor a post doctoral quantum mechanicist but it occured to me that perhaps what is observed as quantum entanglement and/or other forms of non-locality might simply be the effects or manifestations of some form of absolute internal clocks that some how unlock the manner in which the wavefunction collapse of an entangled particle occurs when the particle is observed or forced to undergo a wave function collapse to manifest in say a measurement of a spin up or spin down state for a massive fermion or massive bosom, or for a photon, a left or right circularly polarization, a left or right elliptically polarization, or a vertical or horizontal polasrization state and the like?

Quantum theory gives (some) excellent predictions, but also suffers from intense self-referentiality. That is, if you accept a test that uses e.g. Bell's Inequality you have to accept many of the premises that the experiment is supposed to validate.

The Science comment paper presumes the mixing of quantum observables, that mixed values can be entanged and and thus from the Bell's statistics non-locality follows. However, it follows from two separate (also common, usual) assumptions.

How do you test for mixed states? It is really difficult to find and experiment that is not self-referential. Without ab initio assumptions, how do you show that this or that event was the consequence of the agent being in superimposed states until forced to show its hand? BY contrast, why do so many instances of "mixed" systems that are filered without renormalisation - linearly polarised light, for example - behave in so obdurately classical a manner? Twist you TV antenna through 90 degrees and you get no signal. Not: a lesser signal. None. And so on.