I also have ADHD and have a messy room, lol! It's so full of stacks of books, bags, and notebooks. I don't really want those items, it's just that my ADHD prevents me from wanting to clean my room, since other things like reading or watching videos are what my brain wants. But I am not that fatalist, and I have tried to fix some things here and there, but overall it is still a mess.
Don't worry , I think you could smell the piling plates and if th smell is disagreeable to you, you may feel compelled to clean. Or you can tell to yourself "is this what I want? No way!".