Reddit (the company) controls the platform. They can just install new mods if the current mods arent doing their job. I doubt most users would even notice that the mod names have changed.
Facebook spends $500m annual on moderation. That's a top-down estimate of moderation costs for a large website.
You can try to do a bottom-up estimate, but how much do you think it costs to moderate the (8th?) largest domain on earth? More or less than that? More or less than what Reddit's current operating income is?
You can try to do a bottom-up estimate, but how much do you think it costs to moderate the (8th?) largest domain on earth? More or less than that? More or less than what Reddit's current operating income is?