In the end it somewhat boils down to pure greed. Instead of stabilizing production costs and/or reusing generic components to ease up manufacturing and repair - HP, Epson, Canon, Dell, Samsung, Kyocera and others try to hype their products with whatever tech stack is currently in trend. "growth hacking" is literally their job description.
There eventually will be a ChatGPT printer on the market. It's inevitable due to what kind of people manage a printer business: It's not the type of people that know how to build printers anymore.
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My own methods would also have easily produced this kind of error if you set the threshold for what to consider identical when clustering high enough. But for OCR the risk is somewhat mitigated by people not trusting it to be error-free, and so it can be an acceptable tradeoff if it reduces the overall error rate, but if you're outputting the raw pixel data and let people think it's an unmanipulated image you're begging for trouble.