Actually, they wouldnt. I've played most MMO's and the majority can't do anything about that for the exact same reasons XIV can't. It's too much of a headache and can't be monitored without invasive tactics that absolutely no one at all would like. People are acting high and mighty right now, but that's only because they arent dealing with what would happen if they DID choose to monitor it. They're sitting here saying they'd love it when in reality they'd hate it. It's very much the "housing lottery" situation. Hundreds here were adamant that that was exactly what we needed. and now we've got it and they're already panicking about how actually it was a terrible idea. There's nothing that wouldnt cause great harm that can be done and it has always been this way with MMORPG's. It has always been that way. Particularly Asian MMO's, that has always been a thing and it always will be. The only time it's bannable is if the person is caught red handed in a glaringly obvious way (so no, suspicion snitching has never worked either for any potential vigilantes salivating). They pretty much have to turn themselves in directly or indirectly via posting proof that it's them doing it.
Anyway, just turn your performances off.
Some of you are very annoying. I've seen people who are actually playing by hand get disgruntled comments about how they're playing a midi-fiddle or whatever it is. None of you are on XIV's payroll alright, Yoshi isnt going to personally bestow an award upon you for being obnoxious so stop trying police people as if you think you're some unofficial GM sidekick or something. You can complain here all you want, that's fine, but once you start accusing people in-game, you're going way too far and being disgustingly rude. Not everyone is doing it. And you're not some hero for trying to "keep people on the right track" or whatever it is that you think you're doing. Just turn. Your performance. Off. System Configuration -> Sound Settings -> Performance to 0. Thank you.