Iceland is not Scandinavian, but it is Nordic (as a Scandinavian, English speakers conflating the Nordics and Scandinavia is a pet peeve)
The word I used, "Scandinavian", can be used both to mean "part of the Scandinavian peninsula" and "part of or relating to the culture originating on the Scandinavian peninsula". Calling Iceland Scandinavian easily satisfies the second definition.
You're right, in that Scandinavia is a peninsula and Iceland being a far off island is not part of it.
English is a weird and inexact language where there are a lot of different things words can mean. Seizing upon a single obviously-incorrect definition is not the whole story.
I'm sorry this bothers you; however I fear that you face the same battle as would a German trying to get Americans to call their country "Deutschland" instead of "Germany".
Interesting. From the Internet:
> 1. The original and locally preferred view is that Iceland, Finland, Faroe Islands, and Greenland are all countries considered to be part of the Nordics, but not technically part of Scandinavia (which would only be Sweden, Norway and Denmark in this case).
> 2. The international and more commonly preferred view is that the Faroe Islands, Finland and Iceland are part of both Scandinavia and the Nordics, leaving Greenland as the only non-Scandinavian country in the Nordics (along with the Norwegian territories of Svalbard, Jan Mayen and Bouvet Island).
https://nordicperspective.com/facts/nordic-vs-scandinavian#w...