People who were in to rippling muscly naked barbarians doing muscly barbarian stuff incorporating that in to their bdsm hobby is very not weird and predictable. Idk what people's experience with the bdsm and fetish community is but having hung out on the edges of it for decades most fetishists are very boring and the only reason fetish culture seems interesting and lurid to outsiders is American neo-puritanism. There just isn't that much depth or complexity to finding sexual enjoyment in spanking. Once you get over the "ooh these people are weird sex deviants!" Thing the most genuinely interesting parts of fetish culture are mostly arts and crafts stuff like shibari or the actual process of making bondage gear. If you've seen one St. Andrew's cross you've seen them all and there isn't much to say about them unless you start getting in to carpentry. It's like any other hobby except Americans have an extremely, virulently, violently unhealthy relationship with sex.