I just watched Kim Da-hyun's stage video, and there's absolutely nothing wrong with it?

What exactly is wrong with a teenage trot singer putting on such a cute and exciting performance at a festival? lol
When I just skimmed the article headlines and saw there was a controversy, I thought people were saying her singing was as bad as a duck's or something.
But she sings well and has great vocal skills. She was a perfect fit for the festival.