"Robot, parse this statement, 'this sentence is false'." The robot explodes because it cannot understand a logical contradiction.
I swear, that's what this argument sounds like to me. Also, I'm genuinely confused why people don't think that, if we can simulate randomness with computers in our world with pseudo random number generators, why a higher reality wouldn't be able to simulate what we view as true randomness with a pseudo random number generator or some other device we cannot even begin to comprehend.
Either this paper is bullshit or they're talking about some sort of very specific thing that all these articles are blowing out of proportion.
I don't believe we are in a simulation but I don't believe this paper disproves it. Just like I don't believe in god but I don't believe the question "can god make a rock so big he can't pick it up?" disproves god.