I wondered what was so special about Kim Da-hyun's performance, so I checked it out

I don't really like trot, so I wasn't paying much attention, but since there was so much talk about it, I checked it out, and it was just an ordinary performance.
Even if the sound quality was poor and it wasn't easy to hear, it's not like she was incredibly amazing, nor did I find the song particularly good, but considering she was singing while dancing, she wasn't particularly unstable, and her mid-performance comments were fine. It wasn't a performance that deserved to be criticized at all, let alone insulted.
I don't know what upset Ms. Sim Soo-bong to make her say those things, but setting that aside, I don't understand the people who are taking Ms. Sim Soo-bong's side and saying the performance deserved criticism. I don't get it at all.