Couldn't they use a manure spreader to throw the grass onto a conveyor belt at a steady rate? Manure spreaders come with variable flow rate and beaters to shred

Couldn't they use a manure spreader to throw the grass onto a conveyor belt at a steady rate? Manure spreaders come with variable flow rate and beaters to shred the manure. If you threw a bale of hay in there it would tear it up and throw it nicely. Here is an example: https://www.youtube.com/watch?v=YhvMMK91P-8 https://www.youtube.com/watch?v=YhvMMK91P-8