The kiosks were just the threat fast food companies used to try to push-back on the proposed law, and when lawmakers called their bluff, there were some deplyments, but not everywhere, and in general fast food employment has gone UP (not down) since then.
"the U.S. Bureau of Labor Statistics showed California had approximately 750,000 fast food jobs, roughly 11,000 more than when the higher minimum wage law took effect."
https://www.nbcbayarea.com/investigations/california-minimum...
I'm not seeing the shorter hours you are. Might be unrelated to wages. There was a general decline in fast food sales across the country (not just in CA) because of the crazy corporate price hikes (which consumers pushed back on).
https://www.gov.ca.gov/2024/10/03/californias-20-fast-food-m...
https://www.latimes.com/business/story/2024-10-10/column-the...