Well. This is slightly depressing, very inconvenient, but adventuresome at the same time.
After cutting out from my diet, completely and without exception, the following, I’ve been scarily tonsilith free:
These are huge things to give up, and mean I can’t eat at any restaurants ever again, and I’ve had to cook my own food, but… it’s still better than flushing out or digging out calcified/mucusified things from my tonsils. I think my tonsils are even smaller than before, rather than being huge tonsilith factories.