Gonna put my tin foil hat on here for this:
https://www.ign.com/articles/square-...nal-fantasy-16

I would not be the least bit shocked if Square is ignoring their own ToS to keep as many people subbed and continuing to sub as possible. Hence why things like brothels are fine, bots are rampant, people can stalk you around the entire map for days without consequences...

Maybe they make up a number every week to tell people or maybe they ban a very small portion to keep appearances up but I've always been under the impression that they don't necessarily "care" about the problem, especially since RMT is basically normalized in FF11.