Cryptocurrencies have also been used as a way to escape hyperinflation and retain savings despite a coercive and highly restrictive government, eg Venezuela.

When a system becomes corrupt and dysfunctional and normal transactions and savings become ineffective or illegal, cryptocurrencies have proven themselves as a viable means of escape. The value of that is hard to understate.

I agree that a lot of other applications are overhyped, and that there is a lot of bloat and excess in the crypto space. I think their core use case and value is in providing an extremely difficult to block form of value storage despite restrictive and irresponsible governments. The value of that depends on how restrictive and irresponsible your government is being.