A bit of a click-bait title as the article does not show how much or little the super-rich of Scandinavia pay. Just a study on how much tax they are avoiding. And with the super-rich of Scandinavia only evading 30% of their taxes, I think I would agree with a sentence at the end of the article:
"... maybe the data should cause even more surprise: despite the best efforts of a lucrative global tax-evasion industry, Scandinavia’s ultra-rich are paying 70% of their taxes."
Wonder what a similar study in of people in the US would say (not that one could really know what people are evading, or the IRS would prosecute more people)