I don't think objective is the word right word to describe this. It's algorithmic and deterministic. But it's not objective in the sense that it's objectively correct to group people like this. You're baking in a lot of implicit assumptions about how representation should/should not work by choosing this particular grouping algorithm.

It also doesn't remove the human factors from redistricting; humans would have to choose and approve this method. It's just laundering the gerrymandering through an algorithm to give it credibility.

But if you're the party that stands to benefit from changing redistricting laws, then the system loses credibility because you picked this method.

And if you're the party that stands to lose from changing these laws, then you're unlikely to self-sabotage yourself by doing so.