A regression to Jim Crow era practices is a serious setback.
Ignoring all of that history, and taking your statement in good faith, it still is reductive to pretend that we're in the same state as the 18th century. Voters are much more diverse, and the technology exists to precisely draw districts to achieve very precise outcomes. The increased precision and ability to do things at scale is a differentiating factor, as well as the increased consequences; a voting population that's just "land owning white males" might see gerrymandering as less extreme that the much more diverse distribution of beliefs we have in the current voting population.
The current problems with gerrymandering are huge. Issues that have super majority support among the population (reproductive rights, immigration reform, drug reform, gun control) are controlled by an increasingly small population of voters. You can (and even may be correct) claim that this represents the wills of the founders; it's a much harder sell to claim that this is a "good thing" that the people shouldn't be able to push back against.
Partisan gerrymandering has not.
Also, remember that this is the same court in which three justices (Gorsuch/Thomas/Kavanaugh in Kisor and Thomas again in Gamble) have openly called for ignoring stare decisis when it doesn't suit their political objectives. For them to cite precedent and/or judicial humility in any decision at this point is dishonest.
That's exactly the issue I was getting at. Equal representation is clearly a constitutional issue, which it is the court's duty to rule on, and yet the constitution does not explicitly address districting issues. Would defining a standard to determine whether a districting plan meets the constitutional requirement be within the court's purview? Clearly yes, because that kind of standard-setting is a significant part of what they have always done. It's right in the introduction to the Wikipedia list of landmark decisions.
"establishing a "test" or a measurable standard that can be applied by courts in future decisions." https://en.wikipedia.org/wiki/List_of_landmark_court_decisio...
Declining to set such a standard because such things are delegated to the states would have been reasonable. Declining to set such a standard because it's a "political" - i.e. legislative - responsibility is also reasonable. But "because the constitution" doesn't work because the constitution is mute on the specifics on which the court was asked to rule. They can't overturn what doesn't exist.
>"Gerrymandering," the practice of drawing legislative district boundaries so as to maximize partisan advantage, is far from new. Elbridge Gerry, the Massachusetts governor whose name literally became synonymous with the practice, worked his magic to create a salamander-shaped district over two hundred years ago.
https://origins.osu.edu/article/re-mapping-american-politics...