A group of users that I suspect are linked and managed by the same person have been constantly harrassing people in comment section of multiple recent kdramas. The person seem to have a vendetta against My Demon (2023). They also specifically pick dramas to support (i.e. latch on) and bully any user that criticize the dramas that they like. Their activity in my opinion is harmful as it incites and encourages fan wars. I advise mods to investigate this situation. Below are some accounts that I suspect. This "person" (these accounts) is particularly active in the comment section of Castaway Diva (2023).
https://mydramalist.com/profile/RubberSoul
https://mydramalist.com/profile/10022771
https://mydramalist.com/profile/11551933
https://mydramalist.com/profile/11551885
https://mydramalist.com/profile/Newman91
https://mydramalist.com/profile/11549003
https://mydramalist.com/profile/9845669
https://mydramalist.com/profile/IU127
https://mydramalist.com/profile/11561155
https://mydramalist.com/profile/11561443
https://mydramalist.com/profile/11589745
There are definitely more, but this is what I can find so far. Besides voicing the same opinion (they tend to comment together at the same time), it is evident from their watchlist that they generally upvote and downvote the same dramas, which can be concrete evidence that they are the same person.