This strikes me as equivalent to researchers hundreds of years ago saying "well if our universe is a clockwork simulation then we should be able to detect the gears turning by this method".
Certainly interesting ... I'm not sure that we could currently understand a single principle of a system capable of simulating our universe.
A more apt analogy would have been testing for a specific number of gears with a specific number of teeth in a specific configuration. Choosing very specific hypotheses purely based on your ability to falsify it and no other supporting theory or evidence seems like a low reward strategy.
I'm certainly not trying to argue against pure research in any way.
Certainly interesting ... I'm not sure that we could currently understand a single principle of a system capable of simulating our universe.