(wtf season 7 LF, cont.) (2) pseudo-socratic method discussion between LF and Sansa in the final episode and how Sansa turned it on him when he was called to answer for his crimes.
As I said on Twitter, D&D actually explicitly state they wrote this plot backwards and structured it to try to “TWIST!” the audience.
As for why LF didn’t make sense, I think it’s mostly this and that he’s probably dead by this point in the books.