It's the same in the west though, or, used to be with the boy / girl bands from the 90's / 2000's. Pretty sure K-pop ensembles are loosely based on that.
It's really not even near to the same degree. For example, an unstable fan may bring a knife to a handshake event, see someone else shake their idol's hand, lose it, and start knifing people.
The idol is blamed for the incident. For the state of mind of their fan. For doing anything that might incite jealousy.
The idol is blamed for the incident. For the state of mind of their fan. For doing anything that might incite jealousy.