Its only a concern in red states.
Mi and NY gerrymandered their own safe districts and were not challenged. NC goes thru this crap every single time for the last 2 census cycles.
“Mi and NY gerrymandered their own safe districts and were not challenged”
In the case of NY, the NY Supreme Ct. found the new House districts in 2022 were unfair to Repubs and had a commission redraw them. Repubs won 11 out of 26 after the redraw, instead of the 4 they were favored to win before the Court stepped in.
Double edged sword if the SCOTUS allows state legislatures complete authority. In CA & NY the legislatures could eliminate just about all Repub districts.