Of course it's unreasonable if 200 persons carve something into Arc de Triomphe. But one person here, one person there 🤷 700 years later people are gonna wonder of the story behind "get shrekt lmao".
I mean, Halvdan was just a normie mercenary at the time of carving.
This is the reason I don't really care if some cuts their name into the pyramids or whatever. Given enough time it will be added to the sites history and seen as spectacular
Just dig a hole