[reginold]

You misused the word "interesting" in your title then.

"Interesting problems" implies wanting to work on them or being curious about the solution.

You don't want to work these problems, whether they involve cryptocurrencies or not. You want solutions as a consumer, which is an important voice to be heard, but different.

For example, a quiet running refrigerator would be useful to me but is not an interesting problem to me.

A title better aligned with the content would be "Problems I want solved as a consumer that crytocurrencies do not solve" or "As a consumer, cryptocurrencies haven't solved my problems".