Nothing is an issue in your Last Thursdayism style belief. That's exactly the problem with it. Because you allow for magic to happen, you can invoke it at any time you feel like using a get-out-of-jail-free-card.
Ever here in reality though... explanatory models that make testable predictions and the evidence fitting those models, is the
only issue when trying to find out things about empirical reality
the only question is do we know that the forces governing how they must behave exist in the far past on earth as we now experience them?
And the answer is yes.
As told you already, explanatory models about the past make predictions that can be tested in the present.
If we assume physics in the universe works the way it works at all times throughout the universe, then our predictions work. If we don't assume that... well... not only don't the predictions work... there actually ARE NO PREDICTIONS. Because such non-explanations and magical last thursdayism nonsense is just magic drivel that makes no sense. It is utterly meaningless and without any explanatory value whatsoever.
As pointless at trying to include undetectable pink graviton fairies in the workings of gravity.
The answer is you, of course, do not know. All that matters is if science knows, in case you haven't clued in yet. Once it is demonstrated that they do not know, then their beliefs and assumptions fade into insignificance.
Yes, science is intellectually honest enough to switch gears when things don't add up. Scientists don't get to invoke magic like you do.