Err didn't you listen to their "Black Eyes" mini's album?
Those who are saying he can make them take vocal lessons. Look at their schedule, it's packed ! The girls are exhausted. When will they have time to improve vocally to reach the standard KKS want them to? It's impossible. He's too hard on them. I'm surprised they didn't all collapse yet.
Maybe the addition of two members was the best alternative to not lose face since he doesn't have the guts to kick out anyone. It's KKS's own fault, in the first place for picking members that he now finds unapt at singing and that isn't afraid to bash for their lack of abilities.
Let's face it. Soyeon is the best singer and no one is close to her in terms of singing abilities, that's why she sings that much. If she's unable to perform, I don't know who in the group could possibly fill in for her. Imo, no one even Hyomin, lead vocalist, can't. The rest are pushed in the background, either vocalists or rappers. It means singing parts will be divided for 3/4 members now. I don't want to lose my favourite or any member at that, so I'll deal with the 2 new members. If they can evolve musically. I'll deal with it. For me, it's better than seeing one of them leave to be replaced.
I hope they won't take it too hard. I'll still support them.