Comment by SpicyLemonZest

The opinion in Rucho v. Common Cause (https://supreme.justia.com/cases/federal/us/588/18-422/) is pretty clear. The North Carolina and Maryland redistricting committees both sought to override the will of the voters. They had specific, explicit goals for precisely how many Democrats and how many Republicans should be elected in their state, and they knew the voters would not vote in accordance with those goals, so they redrew the maps in a successful attempt to ensure the partisan balance they desired. To me that's a clear example of disenfranchisement.

The Supreme Court didn't quite rule that this was constitutional, I suppose, only that no court is allowed to consider the question.