That means it doesn't have the same cost as bitcoin. That says nothing about why Chia coin is useful. Can I do anything with it, or is it one of those things where I buy it now in the hopes other people will buy it from me for more later?
I don't know if anybody has done the math on how much energy/CO2 it costs to construct a hard drive vs. used in PoW mining with GPUs or ASICs but I'd love to see it.