As a Dane, I have had many a non Scandinavian try and educate me on Norse mythology too and their knowledge is based on those godawful Marvel movies and comics.
They usually get very confused when they learn that Thor and Loki aren't brothers. That Loki and Odin are the ones who are blood brothers. It's like it doesn't compute in their heads. And for those who don't know, blood brothers in old scandinavian culture was two men slicing their hands and clasping their wounded hands together to mix blood. That was a way to forge an alliance and an oath of loyalty as strong as if you came out of the same womb. I'm pretty sure it was still practiced in more recent times as well. Probably died out when AIDS became the big scary thing, but I dunno. I just have vague memories of older people telling me about doing the blood oath when they were young.
In any case, it is just super fun to have your culture reduced to a cringe American comic book where Thor looks nothing like Thor and Valhalla looks like ass and literally none of the gods look right according to their descriptions in mythology. Couldn't even give Sif her golden hair, could they?
I get a similar tick when some people claim that The Little Mermaid takes place in Denmark because it was written by HC Andersen. No, it literally doesn't. We don't have palm trees and mountains like the ones in the movie. And even in the original fairytale from the 1800s, it is very heavily implied that the prince lives in a fairytale country that borrows from the Mediterranean, Middle East and India. Even in the original illustrations for the story, there are palm trees and a arab looking palace in the background of one of the illustrations.
HC wanted to put the reader in the mermaids place. Give them the same longing for another world that she had. If he had set thr story in Copenhagen it wouldn't have captured the imagination of 1800s Dane the same way. He managed to make these gorgeous descriptions of the strange and beautiful country the prince is from. There is a reason why Edmund Dulac designed the prince the way he did in his illustration work for the story in the early 1900s.