You seem to be confusing the Simuluation Argument with the Simulation Hypothesis.

https://simulation-argument.com/faq/#faq-2

The latter is absolutely insane creationist nonsense. Bostrom even says it can be proven by a pop up announcing we are in a simulation, which sounds like exactly the sort of thing you'd maybe expect God to do to prove the truth of the bible.

Wikipedia attributes the simulation hypothesis as having origins as far back as the "Butterfly Dream" of Zhuangzi from ancient China, not Bostrom's paper.