It's low-effort, and, once enough time has passed, it'll be this decade's equivalent of those trivial-to-add "blink" or "marquee" tags from the geocities times.
Fast-forward 5 years, and our attitude might be:
Hmmm, so you added an AI-generated image to your AI-generated slop "post", everybody knows "those" pages. Not gonna waste my time here.
Considering the time and effort that goes into writing a book, if you value your own time, and work, this should be a no-brainer.