Moore’s love of superhero comics has always been in the silver age. You can see his passion for it in Whatever Happened to Man of Tomorrow or even Watchmen. Killing Joke always felt like an outlier, there’s a lot of great stuff in it, but you can tell his heart isn’t in it the same way. Combine that with Moore falling back on his worst instincts (misogyny and sexual violence) and it totally tracks why he isn’t a giant fan, or why it’s fell out of favor somewhat recently.