I don't think this post reads as AI at all. It has none of the tell-tale signs either (em dashes, common constructions like 'not just ____ but ____, bullet points, headers, etc.)
The images are AI-generated. This makes them automatically bad in some people's view, but I think they're reasonably fitting here. With a little bit of work (e.g. attention to consistency between frames, blending into the site background) they could even be good.
The art’s aesthetic, which resembles Calvin and Hobbes, is disrespectful to its creator, Bill Watterson’s.
Bill spent a lot of energy fighting commercialization of his work, arguing that it would devalue his characters and their personalities. I don’t know what is cheaper than using an AI model to instantly generate similar art, for free.
You did do pretty well! I don't think the final result was ruined at all. Not many people will notice things like his pants only being brown in the first image, or their eyes only having whites in the third image, or his jacket sometimes having a hood and sometimes not.
Compared to what we see on most blogs, even patio11's, this is capital-A Art.