The people that did exploit this were already probably bored of the game and being able to streamline the mythic making process probably added some fun/excitement back to the game. They probably were at the point of "Well If I get banned I wouldn't care because there isn't shit to do, and if I don't...well...then I guess I get to be a bad ass!"
I mean I don't know if anyone has noticed but the amount of posts on FFXIBG have dropped SIGNIFICANTLY over the past month and a half.