California is usually the leader in air quality regs (state by state wise). Caused by bad air “state ranking” in the past:
https://www.calstate.edu/csu-system/news/Pages/California-Named-State-with-the-Worst-Air-Quality-Again.aspx
Whether Texas or AZ will follow the lead of CA, who knows? There are 14 states that do follow CA closely in vehicle air pollution regs:
https://ww2.arb.ca.gov/sites/default/files/2022-05/§177_states_05132022_NADA_sales_r2_ac.pdf
Whether they follow on CA nat. gas appliance regs. remains to be seen.
Say what you will, but Houston has similar ground ozone levels to Los Angeles. I see no Jihad in Houston against gas appliances installations at home. Water heaters, stoves etc.
The reason is that Texas/Houston says, we can live with this ozone level rather than bankrupt ourselves via no new natural gas installations.