Speed hacking & "face to" automatic macros (hardware macros, not using the FFXIV macro system). Whenever these are mentioned you begin to hear thunderous hooves as the White Knights descend & decry that none of this happens, it's not cheating & it is easy to do using the in game system.

It does happen, it is cheating & you require input devices (eg MMO mouse) with hardware macro abilities. I'm obviously not going to name those who use these systems but many of them are well known but have never suffered any consequences.