The article and ruling isn’t about Portland, it’s about Grants Pass.
At the center of the case is Grants Pass, a city of roughly 40,000 in southern Oregon with ordinances that bar camping or sleeping on public property or in city parks. The city’s rules define “campsite” as “any place where bedding, sleeping bag, or other material used for bedding purposes, or any stove or fire is placed.”
As far as I can find their ordinance has no such exceptions.