They are unlikely to grant standing unless they believe they need to in order to take the appeal sua sponte. To recognize the states standing would open a box that doesn't need opening. The easiest way forward will be sua sponte. Now, if the 9th circus already has case law allowing the state AGs office to intervene after passing by repeated opportunities to do so and after a district court ruling had been handed down, then I will retract my statement above and it will be trivial to grant the state intervenor status. Also, if they do grant the state intervening status, the circuit will have truly earned their nickname. Also, if the state is given intervenor status, it's going to pollute the case procedurally and would likely cause SCOTUS to either take drake or deny cert to both peruta and drake. I really don't see an upside to them to grant intervenor status.