It's only "unwarranted" if you're willing to be blind to the entire history of crypto.
> The crypto economy advances year after year,
Yes, the speculation and scams in crypto grow year after year.
> but you would never know it perusing HN.
People don't only peruse HN. We've yet to see that amazing growing economy grow beyond speculative trading and scams [1]
[1] Yes, there's a small part of crypto that helps people send money to sanctioned countries
