1. Twice- I only liked them for their music, they were all insanely pretty, (especially tzuyu who seemed so cold in TT and Likey) but I felt like they were arrogant, like stuck up cheerleaders. In the beginning of cheer up they seemed to be ignoring and being rude to the camera man and singing about real men. I didn't understand the lyrics and thought it was toxic. It's only when I got to know them through funny YouTube videos that my opinion on them did a 180°. They are such kind and pretty girls that go out of their way to help staff and other idols.
2. Blackpink- The song was ok but I wanted to know more about the girls. The very first info I got from I think quora or a forum like this was that Jisoo and another member were bullies. It put me off of blackpink, until I realised those people were talking out of their ass.
3. Stray kids- That they make only noise music that gives you a headache. I accidentally listened to their bsides I think it was sunshine when it popped up on my daily Spotify playlist and it changed my mind. After that I listened to miroh and side effects. Their music is more out there with heavy instrumentals compared to normal kpop but it's hella catchy and well made.