Lave Revolution is official canon recognized by Frontier. It holds just as much weight as Drew Wagar's Reclamation. Several Elite Dangerous novels were penned prior to the release of the game. I think that there is a good chance that hints about the Rift or other non-rift related easter eggs are likely scattered throughout all of the books.
Canon or not, 'if' that author is claiming that the rift is between Reorte and Riedquat then he is directly contradicting the author who invented the rift in the first place. Therefore it would be nonsense.