forum.allkpop.com/thread/100234/
I have always found these narratives very ridiculous, not only because we literally have no way to know for sure, but also because most kpop fans don't seem to be able to consider any possibility but extremes. groups have either to be bffs attached at the hip that can't go on 2 hours without cuddling or have got to hate each other's guts.
it is delusional to think all groups are a bunch of bffs, and it is very cynical to insinuate they all hate each other. most likely, it is somewhere in the middle for most groups, where some members get along well, some not very well, some are actual friends, others clash, some just consider each other professional colleagues etc.