California dairy is totally a thing though. We had this TV ad campaign decades ago that always ended with "great milk comes from happy cows; happy cows come from California". Also, Harris Ranch is a pretty decently sized cattle farm down near Coalinga (you know that you're getting close to it when you smell the cow poop while driving down I-5).
The missing information from these almonds vs cows debate is how big the two respective industries are in California. (I don't actually know this answer, so I'm curious if anyone knows.)