[Annuga]

I'm pretty sure 'original principles' refers to the narrative purpose Moore intended that the movies did not pick up on, the man has been very vocal about disliking adaptations of his work as a whole outside of the Justice League episode For The Man Who Has Everything. Haven't seen V For Vendetta nor read the original but I have read and seen the other two. For example, ehen The Comedian is about to rape Sally, the camera sexualizes Sally's body with certain camera shots, making her more 'alluring', the fact it is a rape scene should tell you all you need to know about why this is wrong. For the Killing Joke, at one point, Joker says "Why aren't you laughing?" In the movie, he angrily yells this while beating the shit out of Batman but in the comic he seems puzzled, confused, as if he was questioning if his 'one bad day' point was truly wrong before Batman appears out of a mirror, as if to symbolize shattering Joker's point of view. Moore was a man that was very particular with details like that


TLDR: I think he's massively upset that they missed the point of his work to the point he doesn't want association, feeling ashamed about the perversion of his work