[yyyk]

>You can certainly challenge the premise that humans will ever have the capability of creating a simulation as high fidelity as our reality. This is very far from certain.

I don't think it's the best formulation. Let me formulate this in IMHO a better way:

If a simulation is of an equivalent complexity level to the 'true' thing, it's essentially equivalent and might as well be true. There's an argument from quantum mechanics that this reality cannot be properly simulated with anything simpler. If true, the conclusion is that since we exist we are real.