That weight is not at all unusual for Persians, Maine Coons-the article says the cat may be part Maine Coon- Norwegian forest cats, Siberians etc, they are just large cats-my Maine coon weighs 22 pounds and is bigger than my neighbor’s yorkies-not fat.
Do Norwegian forest cats actually live in the woods and are there any cats left in the world who live in the wild the way their ancestors did?
I bet your cat makes the neighborhood dogs rethink their options.