I don’t have a source for it, but I recall hearing that yes, their eyes work at a different speed than ours, and that’s part of why cats and dogs are generally not so interested in TV. Unfortunately I don’t know what search terms might be useful here since I don’t know if this has a technical name, but something like “refresh rate” or “fps” might help in the search.
I mean, he is wrong about there not being things in place to protect prisoners, but he’s not wrong that it’s still dangerous and the conditions aren’t great. Guards have killed inmates before with no real consequences.