Yeah I was in Stockholm recently and so many people I met use that stuff.
I remember it came over to the UK in the early 80s, sold as Skoal Bandits. Me and a mate used a piece each in a Double English lesson one day and I nearly passed out from the sick feeling of such a powerful Nicotine rush
https://www.theguardian.com/business/2023/jul/30/influencers-and-freebies-big-tobaccos-push-to-sell-nicotine-pouches-in-uk
Took me ages to actually clock what this Nordic Spirit plastered all over Brixton Jamm was advertising. Assumed it was good old booze.