Thats not a reason for crypto being useless, anything can bribe corrupt governments to pour tax money into it.
Crypto has shown people are willing to use it as a currency for investment and day to day transactions. Its held value for a significant amount of time. The tech is evolving still and people see a lot of value in having a currency that operates outside of Governments in a decentralized way even if some people will misuse that freedom.
Money laundering? Certainly.
Black market goods? Of course.
Avoiding taxation? Absolutely.
Day to day purchases? Not that I've seen.
> day to day transactions
Where is this happening?