I think the fact that an objective external reality is indistinguishable from a simulated virtual reality is no mere inference that cannot be understated. Often, this inference is used to prop up skepticism of an external reality, but in fact, this inference gives way to an esoteric argument that needs to be brought to light:
Premise 1. If reality is a simulation, then it has a simulator.
Premise 2. If reality is a simulation, then it has a logical foundation to explain its existence.
Premise 3. If reality is a simulation, then it is grounded by an absolute reality which is logical.
Premise 4. If our objective external reality is indistinguishable from a simulation, then by the Law of Identity, our objective external reality must also have a simulator, a logical foundation for its existence, and is also grounded by an absolute reality which is logical.
Conclusion. That absolute reality is God.
I wrote an
essay to flesh out this argument, if you're interested. I think it's a fairly strong argument for the existence of God vis-a-vis philosophy (not theism), because you can't knock down the first three premises without making other metaphysical claims.