Why the JP community mentality is superior to the EN community mentality

[Yeol]

JP has better practice parties, almost everyone stays for full lockout. Compare this to NA/EU where people join practice parties for few pulls.
It is also for this reason why JP has better clear rates for harder content compared to NA/EU.

They refuse to carry bad players in clear/farm parties.
They will simply black list the bad player in the party, disband, and set PF again.

JP community is not perfect. If a player shows really bad performance, they will most likely be known for that to the majority of people who do content via PF.
That player will get black listed by most people and have a harder time clearing content.