I would suggest, instead, that "Classical Physics" is created by entanglement:

the non-quantum reality at our scale is just what happens, when everything is entangled, to the point of clogging-up-the-works of quantumness, as it were..

.: you get things like .. as you scale up from quantum-level .. the everything-is-discontinuous/everything-is-turbulence .. turns into, once enough entanglement is happening, "laminar flow" in fluid-dynamics, even-though NOTHING in QM is laminar-flow, so there's simply no basis for "laminar flow" at the lower-level...

I wonder how significant this is, really..

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Lol, well, seeing as time or change is a dimension and direction, like any other, tthat's like saying width or height is an illusion.