Not sure I get what you mean by simpler universes. According to the SH simulated universes greatly outnumber any real universes.
The bold statement is to be able to actually extract experimental consequences also for passive simulations, even if only probabilistically. Active simulations are indeed interesting because they would give us a way to prove that we are in a simulation, while the argument in the post can only disprove that we are in one.
A possible problem with active simulations is that they may be a very small percentage of the total simulations, since they require someone actively interacting with the simulation. If this is true, we are very likely a passive simulation.
Not sure I get what you mean by simpler universes. According to the SH simulated universes greatly outnumber any real universes.
The bold statement is to be able to actually extract experimental consequences also for passive simulations, even if only probabilistically. Active simulations are indeed interesting because they would give us a way to prove that we are in a simulation, while the argument in the post can only disprove that we are in one.
A possible problem with active simulations is that they may be a very small percentage of the total simulations, since they require someone actively interacting with the simulation. If this is true, we are very likely a passive simulation.