Why do Koreans hate sexy concepts now?

First it was the backlash against Le sserafim clothing and concept. Recently, Twice and Blackpink also got picked on for dressing sexier. But sexy concepts were everywhere 2nd, 3rd gen. Why people switch on sexy concept now?

blackpink doesn't have a sexy concept

Neither Twice or BP have a sexy concept, a couple promo pics doesn’t equal the whole theme of the CB. Even snsd had sexy pics for their Mr Taxi set of teasers but nothing since from MV to other teasers then has been.