I think it's necessary to put emphasis on the "get-rich-quick schemes" part, and not the "blockchain/cryptocurrencies" part.
I hope you're not implying blockchain tech and all cryptocurrencies don't/can't provide real utility value, but if so I beg to differ substantially. I built a hook to the Stellar blockchain to store SHA256 hashes of audit evidence that can be validated against at a later time as tamper-proofing evidence. This is just one extremely simple use case, not to mention the entire Defi ecosystem that's being developed as we speak.
I hope you're not implying blockchain tech and all cryptocurrencies don't/can't provide real utility value, but if so I beg to differ substantially. I built a hook to the Stellar blockchain to store SHA256 hashes of audit evidence that can be validated against at a later time as tamper-proofing evidence. This is just one extremely simple use case, not to mention the entire Defi ecosystem that's being developed as we speak.