I don’t see the hypocrisy. If the universe is a simulation, that wouldn’t make whoever built the universe a god. There would be no analytical reason to conclude that, unless we started from the specially-crafted supposition that any being capable of creating something like the observable universe had to be equivalent to God, but at that point, you’re just defining your way into theism. If the universe is a simulation, which is not a terribly interesting thought experiment tbh, then it could be a simulation for any reason. The simulators could have been interested in the dynamics of gas and dust dispersion within galaxies and just so happened to create a sophisticated enough simulation that it could simulate the evolution of natural life. If the entire Universe had been “created” (although the point of defining it as a simulation is to point to how it doesn’t really exist, ipso facto if God is a simulator, then God is not a Creator in the sense theists mean) to study dust dynamics at the galactic scale, somehow I think theists would be dissatisfied and not feel like they had really found what they meant by “God.”
In theory, any type of Boltzman Brain could assemble itself at any time and start processing information, so in theory, a simulation could also be an entirely natural phenomenon occurring in a higher-order reality. The two ideas are different, even though Christians like to claim everyone is a theist and everything is theism even when they aren’t and it isn’t.
Anyways, the simulation hypothesis is sort of fun to think about sometimes, while “I invoke supernatural powers to explain phenomena I don’t understand” isn’t all that interesting.