Indeed it is, it turns out that there are lot of things that need to happen to keep the country semi-functional. While the document says it is advisory, it was

Indeed it is, it turns out that there are lot of things that need to happen to keep the country semi-functional. While the document says it is advisory, it was incorporated into the general California order as things that should stay open (and the orders in many other states). It is advisory in nature because public health like this is a state matter not a federal matter.