It seems Jung Young-jin is indeed the "Issue No. 1" Jangreuman

Rhyu Si-min admitted he was triggered by Jung Young-jin,
and now Cho Kuk is stepping in to criticize Jangreuman.
That crazy bastard put his own name in the party name, so it became a self-inflicted wound; they talked about changing it to the Democratic Innovation Party, but they shortened it to Minhyuk Party—do you think that was intentional?
If you hate Minhyuk Party, change it to Cho Kuk Democratic Party or Cho Min Party... Democratic Reform Party (Mingae Party) sounds good too.