It is disappointing but we also have Duncan v Bonta (CA Magazines) and Wolford v Lopez (HI Sensitive Places) in the SCOTUS pending cert queue for next year. Those have a good chance of making it since Duncan is based on a 2nd (or 3rd?) final decision by a good judge, and though Wolford is based on a preliminary injunction, it has a circuit split with other courts on signage requirements, and has the strictest implementation of sensitive places in the nation. When I say it has a good chance, that's relatively speaking much better than the average of SCOTUS accepting 80 out of 7,000 cases in a year, or 1% chance. 20% is a good chance.
This is why this stuff must be stopped at the legislature especially since we are in the 9th Circuit Court where a 2A case has never been won in the courts and we depend on SCOTUS decisions. If the AWB passed, we may have to live with it for 1 to 10 years or more.