Yeah, it's looking like my old theory may have been right, even if it was for the wrong reasons. But I somehow feel neither satisfaction nor vindication from it. In fact, I feel a little disappointed, to be totally honest. I would much rather had my more recent Miyano theory turn out to be correct. I think it would have been a more interesting development for the story. But, like you, I don't think this is a red herring. I've seen the possibility raised that Karasuma started the Organization but did indeed die so others have taken over. If that's the case, the I guess my Miyano theory could still turn out to be true, but I find it less likely with the Karasuma reveal.