Every time new popular song is released
"BTS deserved their success, but not with Dynamite, their previous songs are better!"
"Blackpink deserved their success, but not with HYLT, their previous songs are better!"
But do you notice the fact, people that like these songs are not kpop fans, but people who are used to listen western music. If you put songs like Blackswan or Whistle to them, they may not like the song at all, because they are not used to listen Kpop. Song need to be catchy and easily hook into it. Song itself do not need to be absolutely masterpiece. It just need to satisfy large mass of people to be popular.