Two things that came to my mind
X group wouldn't be popular/sell a lot of albums if the didn't debut under [one of the big4]
X member got plastic surgery (fixed, nose, eye,jaw..etc) not naturally pretty/handsome, not only in kpop but in social media and irl (these things especially happen when people post pic of idol predebut pic or in threads about good looking idols )
what other argument that are getting old?