I dislike how much social pressure there is to use it, honestly. I do most of my hardcore end-game events in XI rather than XIV with some friends I'm very close to and even they are pretty forceful in the 'must use, even when unnecessary' (eg, content we've been sleeping through for years.)
I wouldn't even dream of joining a TS-mandatory FC, that's just asking for drama, especially if your FC has more than 10 members. A static is a bit different; I'm not the type who is easily offended by a few lewd comments or jokes, but I also am not interested in voice chat with people I'm not friends with, which is entirely a possibility with statics in how XIV works.