She was basically pointing out that compared to 2 years before as well as now, VIXX was a group that was hard to work with, and it seemed that she was specifically referring to Leo, as the MCs of the show even spent a portion of the show asking him whether he was always this sullen or whether he was mad. Due to his aloof expression and short one word answers, the MCs had asked him a serious of questions, "Are you mad? Is your condition okay? Oh is your normal expression just like this?" But Leo had just replied "yes" without even a smile, which led to the MCs trying their best to get a smile out from him by tickling him and such.