There is no reason for Music Bank to rigged LYW, who is one of the most popular artist in Korea without any money.
mistake? nah hybe paid them for sure.
Music Bank thought they can get away with this because LWY didn't promote in Music Bank so they thought even if they give LWY 0 score maybe people will fall for it. Korean obviously didn't fall for it, but obviously international kpop stans fall for it.