BSH was called a pig and creepy for hanging out with 2 women much younger than him, the allusion was that he was most likely being a kind of 'sponsor' to them. Might be morally reprehensible but these 2 women are of age and making their own choice to be with him.
But Mingyu goes to clubs and handpicks girls to come to his table. He's basically picking women like if they were on the menu, and because the women are working for the club they are obligated to do as they are told, no matter what. There's a reason sex trafficking is so common in those kinds of establishments. His company didn't confirm that was actually him, but people were quick to defend those kinds of actions, like there was absolutely nothing morally wrong with it.