During my vacation in September - October 2019 in Europe and also stayed for about 1 week in Denmark.
Interesting that they use the type K plug and socket, although most places I visited there use the European Schuko plugs.
The K type socket requires an Earth pin. The Schuko plugs have scraping Earth terminals. So no Earth contact is made.
An adapter can be bought but I think that many users won't bother with a $ 20 adapter for a $ 15 toaster from the EU.
One thing I have to say, can't beat the smiley face.
See my short attached video with the findings while there.
https://youtu.be/sqEkR2RhjVQ
