No, it was because NC updated their constitution to eliminate political gerrymandering, so the specific issue is moot. Here’s the salient part from the article (talking about what Roberts wrote):

“Although partisan gerrymandering claims are no longer viable under the North Carolina Constitution, the North Carolina Supreme Court has done nothing to alter the effect of the judgment in Harper I enjoining the use of the 2021 maps. As a result, the legislative defendants’ path to complete relief runs through this Court,” he wrote. Harper I is the North Carolina Supreme Court’s February 2022 decision.