You know what I really like about that post? The idea that Kylo renounces the dark side early. WAY early. In fact, I think all my tentative feelings with his redemption get drastically minimized if it’s not presented as a big movie (and saga) ending reward, but if it’s an end-of-first-act thing in response to something really horrible and awful that Hux & the Knights of Ren do. At which point the big fight between Kylo and Rey is almost 100% one-sided where he’s just trying not to die while explaining that he wants to atone. And then… we start the 2nd act.
The character dynamics of THAT movie are drastically different (and kind of exciting) more-so than the sort of “we know he’s going to turn good by the end here” vibe that TROS and DOTF both had. The idea that the rest of the trio HAVE to interact with him now would be really, really interesting to see play out.