It’s a crypto currency, and ethereum is a blockchain. Blockchains have little use outside of cryptocurrency. A cake mold to a cake would be a better comparison.
That is simply not true. Blockchain is a ledger and nothing more. Just like accountancy is more than just banking, blockchain is more than just crypto.
It isn’t, as your link shows, no other successful use other than cryptocurrencies or things explicitly tied to cryptocurrencies exist. There’s theoretical uses, sure, but nothing practical. Ipso facto it’s just for cryptocurrencies.