Yeah good decision.
I have a Quinault friend who legally hunts elk on National Forest land on the Olympic Peninsula off-season. All tribe members can do that so this ruling is consistent with this practice in WA.

As a side note, you have to hand it to the Lakota people who could take in millions of dollars by accepting the forfeiture of the Black Hills (which they will never get back) that the US stole after the Treaty of 1868. That’s some serious principle.