Of course, it is only "impossible" with our current knowledge and understanding. Our knowledge is incomplete, and we don't how incomplete it is.
And if the universe is a simulation it it pretty decent one.
I think some people are worried that they are not the apex of evolution.
RE: Physicists find we’re not living in a computer simulation The sci-fi trope might now be put to rest after scientists find the suggestion that reality is computer generated is in principle impossible, writes Andrew Masterson.