What About Those Vikings?

I know a guy who converted to the Norse religious beliefs while in prison. He claimed to his Christian friends that he was only interested in it as a history hobby. Once he got out of prison it became more clear that he was deeper into it. He reads only Norse books, listens primarily to Norse music and chants, and posts primarily Viking quotes and philosophy on social media. He even replies to Christian Christmas greetings with Norse/Viking phrases.

Now I might have asked if I should distance myself from this guy, but that is not necessary. As I heard in a sermon years ago, when your life is on track with and for God and Jesus, such people will just drop away, and that is what has happened.

What are your experiences with Vikings?