but I don't believe there will ever be a solid conclusion.
She basically is saying JD has to be alt right because he likes Lord of the Rings.
Which is different.
Indeed, we must understand that in Lord of the Rings, there were a LOT of racist biases. Those could be what she is referencing here as the far right might take those dog whistle and uses them for their agenda.
But it only means that the Lord of the Rings is used by the Far right, that's all.
Its the same thing with antisemits and Celestial Dragon in One Piece (although in this case, its not because of a Racist bias of Oda, simple because of a comparizon with their antisemitic agenda and the "jew lobby" they claim to be existing)