Are we in a simulation? This short video explores the question

There is nothing “magic” about it; that’s your own straw man. Just like the hypothetical bubble universes (which are unfalsifiable, strictly speaking) that some cosmologists search for without being accused of doing theology (well, a few extreme positivists do make that accusation, perhaps you’d be among them), QM and GR etc would apply to any external universe running the virtual machine. Unlike certain contingent aspects of the universe resulting from broken symmetries, universes made from space don’t have a choice in the matter. QM and GR are in fact transferrable to any “natural”
universe like ours, which is why Guth can talk about eternal expansion, and we can posit other bubbles. You are getting hung up on the motivations and characteristics of hypothetical creators; evidence weakly or strongly supporting the hypothesis that the universe is a virtual machine would be merely that; evidence that the universe is a virtual machine. The theology is all in your straw man.