oh no!!! this is the classic example of companies 'enshittifying' their products to make consumers accept ever-worsening conditions.
(enshittification, with a bit about the man who coined the term:
https://www.npr.org/sections/planet-money/2025/10/21/g-s1-94264/a-theory-why-the-internet-is-going-down-the-toilet )
i have what seems to be the same printer/scanner- i leave my empty ink cartridges in, and then take them for refilling when I need them. Lately, though, I've been sending my print jobs to the print shop up the road, which seems to involve fewer hassles.
It seems to me you have two choices- maybe you can find someone nearby via craiglist or whatever it is people use now who can give you old printer cartridges, or you need to buy new ones (cheaper than the scanner, i hope)-- if it enables you to use the scanner longer, and costs less than replacing it, i think it's a 'pay to learn' sort of situation.
if I were in the US I would ask to put up a sign in the library, or maybe talk to people i know who might have the same printer. lots of people hang on to the cartridges. Heck, maybe even here on Permies you might find someone who might be willing to send you some empties.