I came of age in the late 70s/early 80s so my interpretation of the LOTR popularity comes from it being universally-loved by the Hippies and Stoners (indeed I have several stoner/leftist friends who will still wax poetic about Tolkien). So I've always associated a center-left mindset as being open minded (not compared to today!)

Maybe I'm just "right enough" that I see Tolkien's works and rationale as universal truths (neither right nor left but pertaining to the human condition). If anything Christ was a classical-liberal of His day.

Regardless - "far right" is just a complete mis-definition. But then these are the same people who adore Harry Potter but will destroy Rowling for wrong-think. (Bring us Barabbas indeed!)