I wrote this. If you ask an LLM what to make of IJ as a Sierpinski Gasket, it doesn't yield anything too interesting (it mainly talks about the voids representing the absence of plot points / missing characters). As far as I know the two-ways angle is novel.
The only AI piece is the banner image, because I can't draw. All other images are attributed (Wikipedia, YouTube).
I got the idea for this post after listening to Wallace's interview with bookworm (linked in the post), and subsequently researching Sierpinski Gaskets on YouTube (where I saw the Numberphile and ViralHog videos).