2.5 Data Mining. You may not intercept, mine or otherwise collect information from the Game using unauthorized third party software.
ACT is unauthorized third party software and it collects data from the game. And players can send collected data into services like fflogs.

Very nice you took up the rules

And about the Witch hunt part. Im sure heavy users of mods might feel this. But again no naming here on the public forum.

It's simply not allowed to modify files.
2.7 Modifying or Creating Derivative Software. You may not modify or cause to be modified any files that are a part of the Game or Service in any way not expressly authorized by Square Enix, and may not make any derivative works of the Game.