[9nGQluzmnq3M]

It's not black and white, because the term is used for both culture and geography, and I say that as arguably-Scandinavian myself:

https://en.wikipedia.org/wiki/Scandinavia#Use_of_Nordic_coun...

[jpkeisala]

This Wikipedia link actually describes it well. I am originally from Finland but been living abroad most of my life. After few years abroad I learned that there is no use to correct people "Finland is not Scandianvia" because apart from Finland and actual Scandinavia rest of the world says Scandinavia.