There are a lot of Kpop fans who give Kpop (and fandom in general) a really bad name. I've rarely seen this problem in the Jpop Fandom (Though it does happen, just not as much) in 12 years of being a part of it. I think the worst I've seen was when Koda Kumi began to outsell Ayumi Hamasaki... that was pretty bad

. But yeah Kpop fandom does it for EVERY LITTLE THING.
(Pun... intended?)