That seems extremely unlikely to me. There are 1D and 2D cellular automata that are Turing complete and could arguably support life if they were scaled wide enough. Any virtual reality you can simulate on a computer could have been a physical reality. There isn't any requirement for it to have a spatial topology, there isn't any requirement for it to support life or any kind of complexity. Reality could have been a sprawling Mandelbrot fractal. Why not?
