The DP must be really concerned that this judge will not be in favor of convicting Yoon if they are going through all this trouble to remove him:

The Democratic Party (DP) on Monday disclosed photos it claims show a judge overseeing the insurrection trial of former President Yoon Suk Yeol at a hostess bar, shortly after the judge denied allegations in connection with such a hostess bar.
Jee Kui-youn of the Seoul Central District Court has been at the center of the allegations, but flatly denied such allegations of being treated to multiple visits to the hostess bar.
However, Rep. Noh Jong-myeon, the spokesperson for the DP’s election committee, presented images of Jee seated alongside pixelated two individuals at the bar, in what he claimed was taken inside the bar in Seoul’s affluent Gangnam district.
“The interior patterns and props in the two photos are identical,” Noh said, without elaborating on when the photos were taken. “We cannot entrust an insurrection trial to a judge who blatantly lied despite clear photographic evidence.”
Noh called for Jee’s immediate removal from the bench, saying that the party is considering filing the case with the Corruption Investigation Office for High-ranking Officials.
You can read more at the link.