I have no idea what that means. Do you?
I think someone has been told it wastes electricity.... They never asked themselves the comparative question about physical mining of metals and oil, electricity and water;)
I mean it represents a lot of burned energy creating it with no intrinsic value —obviously fiat currencies don’t really have any intrinsic value either but are generally accepted in society enough to be useful in exchange for things I need.
I have a bit of crypto for speculation, if I had a lot more wealth to diversify I might have more for contingencies but