Even those self-proclaimed "rebellious" players have no issues once they join a professional team

Have you ever heard anyone say that Kim Min-jae or Lee Kang-in are ruining the atmosphere at Napoli, Bayern Munich, PSG, or Atletico Madrid?
Even if we excuse Kim Min-jae due to potential communication barriers, Lee Kang-in is practically a local there; far from causing conflict, there are many local reports praising him for improving the team atmosphere.
Do people think their personalities suddenly change the moment they step foot on Korean soil?