I don't really understand
Most iFans are multis, but koreans kpop fans usually only like one group and avoid all the other groups, that's why kpop groups specially boygroups struggle so much to chart, their individual fandoms are big, but the average kpop fan don't listen kpop music besides their own group
They even drop a group to stan another cause they can't stan 2 at the same time. It's strange