I think that is still a little overly pessimistic.
I think that if the SCOTUS gives clear and explicit guidance on the current 2-step mangling of the 2A that the district courts will start to rule accordingly. You'll end up with pressure from both the lower courts and from the higher court for the circuit courts to respect our rights.
You'll also get a certain amount of peer pressure from other circuits who fairly willingly follow SCOTUS guidance.
This will all have an effect. The effect will not be enough to make me thrilled with the outcomes, but it will be there.
CGN's token life-long teetotaling vegetarian. Not qualified to give any legal opinion so pay attention at your own risk.