To tell the truth, I think that the "Universe is a simulation" is just the latest creationist effort. In a simulation, dinosaurs can be put in the ground just for fun, bioogical relations are just that way because the great simulator in the sky wants them that way, and the apparent age of the universe, speed of light, and radioactivity are all 100 percent arbitrary.
So if the universe is a simulation, there is no reason why the Abrahamic God didn't create it in October 4004 b.c.e. as determined by Usher so it is now science, and must be taught in the nation's classrooms. The Bible is now the scientific description of a scientific simulation program.
The simulated universe conjecture doesn't lend anything new to the believers of the supernatural that they don't already have.
What does God need with a starship (or simulation)?
If existing, it could do all that without a simulation. So any evidence for a simulation would be evidence against it being a supreme being.
And it would go against the tenets of free will. Granted, some flavors of godbothering believe in predestination, but most claim there's free will, including creationists.