Both bot creators and the RMT bots themselves are like cockroaches. Even if you squish one, there's always more of them to take their place.

Blizzard was ultimately only able to stop one of the creators and have no power against the ones who aren't operating within the country, so it remains an issue to this day, albeit far less of one then it is in XIV (Largely due to their GMs actually having the authority to issue bans and knowing how to conduct a proper investigation unlike the STF). Aside from the obligatory RMT spammers, the only aspect of gameplay they've been a consistent issue in there is PvP as the GMs can't exactly be jumping into battlegrounds to observe suspected cheaters.