so basically, she has this bitch attitude that does not respect her 'peers' or colleagues in the industry. She's also caught making mean comments about other cosplayers. Then, people from the industry also said she has a nasty personality. Just being a bitch.
IIRC, there's also this rumors about her getting close to men with power in the industry.
And I guess, it's just bitch has a similar translation with 'whore' in Indonesia.
Do not know for sure which of these reasons explain it, but maybe that's why someone add the tag. Lol.