There's definitely some really really weird details if you zoom in, in a way a human would never do it. Even the signature just looks off, and parts of Jack's hand and the face of the Mayor looks like something straight out of 2023's midjourney.

But I found it. The original. And it looks nothing like as horrible as this version turned out. Faces and hands look normal. Signature normal. Tiles are normal and Santa actually has pupils. I suspect this version is AI upscaled from a low res version of the original.