The issue is not the ratio of NPCs to players. The issue is the number of players per simulation.
If you assume a multiplayer game, you don’t need as many simulations, and we no longer assign a high probability to us being in a simulation.
A multiplayer game may have a reasonable world limit size, and inter-world movement isn’t implemented yet (whether it would be inside one universe, as in Eve Online, or between disjunct universes). So the simultaneous simulation count goes somewhat down, but there are still many and new ones are launched as population grows…
The issue is not the ratio of NPCs to players. The issue is the number of players per simulation. If you assume a multiplayer game, you don’t need as many simulations, and we no longer assign a high probability to us being in a simulation.
A multiplayer game may have a reasonable world limit size, and inter-world movement isn’t implemented yet (whether it would be inside one universe, as in Eve Online, or between disjunct universes). So the simultaneous simulation count goes somewhat down, but there are still many and new ones are launched as population grows…