Okay, i'm calling BS on this right now. It's deflecting, trying to make Square look like the one doing wrong. Most of the people in the thread gloss over this part, and bold the part about RMT.

2.1 Cheating and Botting. You may not create or use any unauthorized cheats,bots, automation software, hacks, mods or any other unauthorized software or hardware designed to modify the Game and gameplay. In addition, you may not take advantage of game system bugs and exploits during gameplay.
It never said they got banned because of crafting or selling or what, just what the posters say happened. Some of the wording of the people saying they were banned, like this passage:

what violations can someone get blamed for acquiring legitimate amounts of money (Well over 8 digits) using in-game mechanics and economics?
Seems to say they were exploiting, as i hear that from exploiters all the time, "The game lets us do it, how can it be an exploit?", like the Titan bug, the Coil bug, or the exploit with allagan gold pieces on the AH.