I can confirm. There are crazy downvoters there. I was so proud because my comic was doing great on Webtoon. I got over 200 subscribers in a week. My score was 9.67 so I thought it was fair and nice, ya know.
Then I posted first episode (in first week there was only prologue), it was better quality, more story, overall it was better than prologue. 'Till this point, no one said a bad word about me or my comic (they still didn't and I hope they never will, lol). The daily views dropped, all my subscribers must have already see the update and my comic disappeared from discover page and all.
And then, through the night I had like 40 views, it probably wasn't any of my subscribers, because the day before I had 0 views. My score dropped to 8.30. So basically these 40 views probably were someone that downvoted me from multiple accounts. That person must have search for my comic by name to find it at that time.
If someone just didn't like my comic they would give me like 4 stars or smth. I mean, I wouldn't give 1 star to anyone, that person put a lot of effort in creating this, no matter if I like it, lol. But I received like ten ones or even more. People that don't like certain comic like to be vocal about it, they like when creator know that they don't like it, you know, just regular haters. But this just looks like someone downvoted my comic to promote theirs. Just like people like to do on reddit.
I can't say that the comments are bad though. I did not receive a single mean one, so...