the WSJ editorial on it was incredible:

One culprit might be conformity bias, as reviewers didn’t want to gainsay findings that support the narrative that humanity is killing the planet and the entire world economy must be rearranged to prevent it. When politics is in the saddle, the chances of bad science increase.
https://www.wsj.com/opinion/a-climate-study-retraction-for-the-ages-49e967e0