Both opinions do ultimately agree that emergency orders are, in general, constitutional during a pandemic. And not by presumption, but by an examination of the laws and facts.
That is why neither position makes this a central question: not because it's presumed, but because they both ultimately agree it's not a point of contention.
The point of contention is whether this particular order's treatment of churches is constitutional. Not whether the orders in general are constitutional.
Once both sides agree that the orders are in general constitutional, the argument that churches should be allowed to stay open while some other similar things stay closed now does require an argument.
There's no question that such requests are generally Constitutional.
I’ve never seen a cannabis dispensary where masses of people crowd together and sing spittle into each other’s faces.
Surely when looking at same treatment, you have to consider the differences in exposure. Plus church can feasibly be done remotely, where cannabis dispensing involves some physical transfer (could be mandated to be delivery though, and no singing and reduced capacity could be mandated for church gatherings).
So churches clearly have more access these days which makes that argument silly.
This is not true for San Diego county.
You can't go and browse, but both medical and recreational users can order online and pick it up or have it delivered.
As for the religion of cannabis, there's community, shared culture, ritual consumption of a specially-prepared substance, believers say how much it improves their life, etc. I even used to buy weed from here: http://coachellavalley.church/
https://www.washingtonpost.com/health/2020/05/26/americans-w...
Robert's order says that "similar or more severe restrictions apply to lectures, concerts, movie showings, spectator sports, and theatrical performances." He concludes that California is not singling out churches.
Kavanaugh's dissent notes that churches are being treated worse than "factories, offices, supermarkets, restaurants, retail stores, pharmacies, shopping malls, pet grooming shops, bookstores, florists, hair salons, and cannabis dispensaries."