well not sure what grinder you use, but unless my green is bone dry, any and all of my grinders (from wooden with pins, space case-esque, simple acrylic, they all put the green under an awwwwwwwwful lot of pressure, certainly doesn't "slice" it, more like destroys it into thousands of pieces
i'd be interested to see if there's actually any science behind what you say (not being condecending

genuine interest, it's the first i've heard of this)