The Capital of Scandinavia?

Sometimes, the political leaders of Stockholm, the capital of Sweden, calls its city "the Capital of Scandinavia". It is the largest city in Scandiavia, but there is nothing that makes Stockholm the capital of Denmark or Norway. I believe Danes and Norwegians just laugh at this name, if they have heard about it. My Norwegian dad surely does. A few centuries ago, this slogan could have caused Denmark-Norway to declare war against Sweden. It is fortunate, at least, that we are all more peaceful now. Still, I think the slogan is stupid.