i have 3 containers in my kitchen: coffee grounds, egg shell and vegetable scraps.
the vegetable scraps go directly into the compost bins or bokashi bucket, the egg shells get ground up and put into the compost bin or directly onto my soil, even if frozen. the coffee grounds container when full goes into the composter bin or again like ground egg shells directly onto my soil...again even if the ground is frozen.
so, i have no verdict other than i compost and reuse everything. does it help, i don't know, what i do know is my landfill garbage bag is 1 bag per week and lacks products that would benefit my soil. i would even cook my animal bones and grind them up but with ground hamburg and turkey, boneless beef, pork and chicken, i have less of that to process.
processing foods that naturally break down, just seems logical to me and that's why i do it.