I enjoyed the Vikings tv series, particularly the early seasons with Ragnar. I especially liked when they wove in religion and mysticism into the episodes. A lot of people enjoyed the series at the time, it was objectively popular. Having an interest in something well represented in popular culture does not make you a de facto racist bigot.

There’s a more likely argument to make, that within the population of white nationalist racist bigots, there’s an overrepresentation of interest/obsession with Vikings/Odinism.