Not being part of a printer have anything to do with why the print looks bad? Like the thing he created to get the print head to spray ink isn't the same drivers and that's just a PoC to make the project possible? If this is just an extension cable from an actual printer, the quality looks janky to what I'd expect from modern ink jets.

Yes i didn't bother reading the caption.

The Nikon Small World in Motion competition, which only recently ended, was troubled by the prize winner being AI generated (3 points, 24 days ago) https://news.ycombinator.com/item?id=49934521