Apart from a few in the 70s, European dishwashers haven’t to my knowledge had food disposers……and it’s never been an issue…….. I scrape lightly, and I mean lightly! Very happy to load plates still with some spaghetti, peas, mashed potato etc on. Never rinse, never soak burnt on ovenware. I check the filter around 3-4 times a year if I remember. It’s never been a problem, dishes clean, machine clean, no doors. Just my personal experience. I can’t imagine I’m my circumstance what benefit a food grinder would bring.