I thought for sure that the JP servers go on their mains for the sake of efficiency in 24-man raids and they're just angry because they want to gear their alts that they're not playing and people who play those jobs, that may not even need the gear anymore, just need for 100% RNG sake, especially if they're the only type of job in the party.

For example, one JP player goes in on bard but they want to gear their summoner, they're better at playing bard than summoner. Another JP player goes in on their summoner, has better gear than the Mhach gear, and rolls Need on summoner gear anyways that has dropped simply to either troll or just turn into GC seals. Most of the time, most people in Japan won't speak up about being wronged unless it's called for simply because of the cultural tradition of "don't make trouble for others and become a burden to your team".