Why, because you or some philosopher say so? Physical is whatever, physics tells us there is, irrespective of how offensive it may be to our common sense notions. It is not up to the philosopher to determine what counts as physical. If the physics community introduces a concept to explain phenomena that may defy spatio-temporality, so be it. In fact, with respect to quantum correlations, some physicists have already suggested thatConsul wrote:Anyway, a non-spatiotemporal world, i.e. one to which the concepts of space/spatiality/extension and time/temporality/duration are inapplicable, is not a physical world.
Can quantum theory and special relativity peacefully coexist?...no story in spacetime can tell us how nonlocal correlations happen, hence nonlocal quantum correlations seem to emerge, somehow, from outside spacetime.
https://arxiv.org/pdf/1010.3714.pdf
Quantum nonlocality: How does Nature perform the trick?
https://arxiv.org/pdf/0912.1475.pdf
Moreover, concepts postulated by modern physics (e.g. non-locality, dark matter, dark energy, point particles, entangled systems, multiple universes, multiverses, hidden dimensions, etc.) would likely have offended scientists/physicists of previous generations but that is no reason to consider such entities as non-physical. Who knows what a future science/physics will need to postulate in order to explain phenomena? It is not up to the philosopher to delimit the concepts that will count as physical.