As a person who played a few "less desirable" jobs in XI occasionally during peak EU/JP times, I've noticed that there seems to be more effort on the part of non-English speaking players (specifically the Japanese) in communicating and grouping up together.
On XI, I'd rarely run into the random group that just wanted the last PT slot filled and it didn't matter as long as you did your job well. Even when I played as WHM or PLD I'd get a JP only party fairly often, so when I got a PT invite as THF it made me really happy.
In XIV though, I've had the pleasure of multiple JP parties. Two parties with French. And a mixmash of I think Polish and German in one group. Every one was very polite, communicating through gestures when auto translate wasn't cutting it. None of us "needed" each other. It was just nice to group up.
Sadly it seems (with exceptions) that most English speaking players are playing this game solo, or with LS only. I mean I've only done Behest twice with a PUG that spoke English and joined into a party. Every other time if I got a PT formed for the event it was JPs...
I guess what I'm getting at is alot of people seem to be trying really hard to overcome language barriers and experience the limited content together... except for some reason, alot of us English speaking players who complain every now and then about JP Onry... well we don't seem to be making the extra effort outside of our social groups. Maybe we should try a bit harder. I know I have a lot of fun trying to think of the right emotes to convey my thoughts.