The latter is the point the lawyers for the redistricting commission made earlier this year, to a somewhat skeptical Supreme Court. NPR's Legal Affairs Correspondent Nina Totenberg had the full breakdown of the arguments before the court back in March.
Well, the redistricting commission's argument practically writes itself: "If 'state' can mean 'not state' (per Burwell), then 'legislature' can mean 'not legislature.'" /s
For real, though, when this decision hits the presses, what most articles are going to miss is this: the evidence that political (i.e., legislature-based) redistricting results in partisan bias is actually pretty weak.