Also worth checking about Chia Network projects with WorldBank and InternationalFinanceCorporation for carbon credits market https://www.chia.net/2022/08/17/bringing-transparency-and-ef... about some real use that is launching very soon.
As far as real transactions, they’ve got a way to go. Just releasing NFT support a few months ago.
Destroying a lot of HDDs and SSDs for nothing
Because these useless calculations have cryptographic properties (one way functions) that make the process secure. Useful calculations instead of just calculating a simple hash function would either be risky in term of future security (because of unknown properties), or outright insecure.
The process of plotting the data is strenuous on SSDs. You might kill an SSD if you are plotting a petabyte or so. But if you are that serious, you can plot in RAM (or just eat the cost, which is insignificant compared to the cost of a petabyte).
The process of farming/mining doesn't stress HDDs in the slightest.
To the OP, why isn't Chia in this list?