If you read the article carefully, it notes that part of the problem in some colder climates is a lack of home insulation. Norwegian homes are well-insulated and therefore very suitable for heat pumps. The home owner with the furnace was US-based, by the way.

The author is not "pulling crap" because they point out the real experience of Norwegian home owners while also describing the diversity of heat pump installations and outcomes.

They're actually being very honest.