The NY SCOTUS Decision was based on an equal protection argument...Gov’t can’t allow one religious group to congregate and disallow it for another, If you allow it for one, it must be allowed for all. That’s basically why Cuomo’s order was found unconstitutional.
The decision wasn’t just limited to equal treatment between just churches. The court said NY can’t allow other businesses to allow indoor groups while singling out churches for more restrictive conditions in a purely arbitrary manner.