That stuff is relative. At heart, CK has always been a simplified, sensationalized, caricaturesque depiction of the Middle Ages. Same goes for a lot of popular media that claims to evoke the period e.g. ASoIaF/Game of Thrones. Look, I love Norse mythology and the Icelandic sagas—Njal's Saga was so awesome it inspired me to write my own—and hate pop culture Vikings with their hipster haircuts and bondage gear as much as anyone, but it's a game. I feel a lot of the negativity around these forums stems from folks' unrealistic expectations of a pedantically accurate simulation where there's only an abstracted entertainment product.
The Long Ships was pretty good. When did that come out again? Right, the forties. But I recently read this Elizabeth Bear short story in the Fantasy & Science Fiction magazine that made me wish she'd made a whole novel out of it.