This feels like bad data to me. Don’t get me wrong, I support it. It’s just that if you’re going to determine if the raise in wages “took” jobs, it’s not whether there was a gain at all but rather how California fares compared to other states, right?
That is, if restaurants went on a massive hiring frenzy country-wide due to an increase in fast food consumption everywhere, but other states had a much larger increase, it would suggest though not prove that the increase in wages caused fast food restaurants to hire less actively in California.
I suspect that’s not the case, but I just don’t like passing off incomplete data as proof of something.