Idols are held to exceedingly high standards of moral perfection.
If they had shown any aggression even when they kids, even verbal aggression, use of any profanity, swear words, crude jargon etc., they will be in trouble and high chances of getting cancelled.
Yet K-pop fandoms in all forums including AKP are a salty lot, using offensive slang, profanity etc. is almost common place and normalised.
I am sure other fandoms - sports, anime, gamers etc would also have many such uncouth specimens.
But the celebrities in other field aren't expected to be pure and perfect ideals of moral rectitude.
So the distance between fans and stars in this aspect might not be noticeable.
Whereas in K-pop.. It seems an abyss.
The perfection expected of the idol vs. the profane behaviour of fans.
Seems idols aren't that influential as role models, when it comes to behaviour.
Of course fans come in many varieties, but crude behaviour should not be this noticeable in a field which values politeness in their celebrites.