These kind of problems are rather easy to solve for computers. You just apply a filter that is equivalent to sqeezing your eyes together and do OCR. Modern CAPTCHAs try to recognize humans not by the end result but by other input patterns like timing delays between clicks and so on.

Well, there is Dessau-Roßlau https://jurios.de/2023/05/25/das-rassistischste-polizeirevier-deutschlands/