Director Park Chan-wook explains that his expulsion from the Writers Guild of America was ”not a violation of the rules”... Why didn't he appeal?

Film director Park Chan-wook has made an official statement regarding his expulsion from the Writers Guild of America (WGA).
On the 12th, the filming team said, "The entire script for 'Sympathizers' was completed and filming began long before the strike began."
"When the strike began, we were in the middle of working on the second half of the series, and HBO came in with some positive changes related to editing," he said. "We had discussions with the writers about editing based on what had already been filmed," he continued.
"So the new lines were written after the strike ended," he said, adding, "However, the Writers Guild of America considered this to be scriptwriting and has launched an investigation."
Prior to this, the Writers Guild of America announced in a statement on the 9th (Korean time) that director Park Chan-wook and co-executive producer of the HBO series "The Sympathizers"
The group announced that it had removed fellow writer Don McKellar from its membership rolls for allegedly violating the 2023 strike rules.
The WGA has asked director Park Chan-wook what specific regulations he violated.
The reason for the expulsion was not made clear, but foreign media speculated that the decision was made because the writings he made during the strike period were deemed to constitute "economic activity."
In relation to this, Moho Film stated, "Through lengthy hearings, director Park Chan-wook and writer Don McKellar stated that there was no violation of regulations."
"A committee made up of fellow writers also found that the violation was not intentional and recommended a private warning, but the board of directors changed its decision to 'immediate expulsion.'"
However, director Park Chan-wook and writer Don McKellar did not appeal the expulsion.
Film said, "The expulsion was already confirmed in April of this year, and at the time, he was concentrating on the production of his new film, 'It Can't Be Done'.
"The lengthy appeal process, along with the work itself, became a burden, so I decided not to appeal," he said.
If they are expelled from the WGA, they will be unable to work on projects with large production companies that have collective bargaining agreements with the union.
Despite this, Moho Film emphasized that "whether you are a union member or not, there is no obstacle to your work."
Meanwhile, director Park Chan-wook is scheduled to release his film "It Can't Be Done" in September. Director Park Chan-wook's new film "It Can't Be Done" is so good that it feels like "it's all been fulfilled."
Yoo Man-soo, a company employee who was content with his life, is suddenly fired. In order to protect his wife and two children and the home he worked so hard to build, he prepares his own battle to find a new job.
It includes a story that unfolds as follows.