If we consider that we have the technology for copying and reproducing human knowledge on a massive scale for less than 600 years, all this knowledge digitalized and available to everyone on the planet through the internet for less than 50 years and we managed to parse all of that and create models that can do any sort of reasoning on that knowledge in the last 10 years, I'm pretty sure more advanced, older alien civilizations could have entire universes mapped and modeled this way which ultimately makes the idea that we live in some sort of simulation not so foreign any more.