I understand your point, there is usually a similar increase of fake profiles dedicated to Game Of Thrones when each new series is released but i am not sure why such a thing should happen with Ragnar.
The Game of Thrones profiles are not usually connected to the World Tree and get deleted (eventually) as they are fakes but Raganr is "real", he is connected to the Tree, he is an MP, he is easy to find. Why do people persist with making duplicates?
I think that many(?) duplicates might be by people who think Geni is like MyHeritage and they need to build their "own" tree, which is not a problem specific to Ragnar. The only other explanation i can think of is that people are frustrated by not being able to edit the profile because it is locked so tight and they do not realise that there is an opportunity to join in the several discussion threads that exist.
I suppose a third theory is that some people simply don't agree with how the MP profile is presented and rather than discuss the issue, or just leave it alone, they instead make their own version. I'm not sure if strictly speaking against Geni's T&Cs but it certainly does not match the One Person One Profile principle.