I don't understand all the "green" claims either. It takes a lot of energy, resources, shipping miles and manhours to manufacture an HDD/SSD. Then you waste several hours of energy to "plot" the disk. Then you've got to keep the disk filled with random junk data and the hosting rig powered and connected to the internet to "farm" it. Plainly less resource-intensive than PoW (Proof of Work), but also very plainly far from a "green" solution.

It just seems so monumentally wasteful. At least with the liked of Filecoin the disks can be used for actual storage.

Does this Proof of Space approach have any real benefits over PoS (Proof of Stake)?