I cannot understand how one could possibly be 'shocked' that folks like a certain plant. Big leaf maples are native in my region and I love them. As noted in my previous comment, they do take up a lot of space and are not likely a good choice for a smaller yard, but I am honored that they have chosen to grow in my forest. Stately tall tree, gorgeous fall color, provides feed and cover for many animals, has medicinal qualities. We all have our personal preferences.
That said, I'd look forward to a photo of your fruit trees with comfrey as a ground cover. Do you use common comfrey or the dwarf variety? I have both and find the dwarf will spread out quicker and does better in shade than the standard type.
