For what it’s worth, I’m a “crypto believer” and I have never considered ease of use to be one of its selling points.
What you are describing are the systems of power which create a stable financial system. That is, one where you can put a nickel into a bank account and expect it to be there in a year or a hundred years.
That indeed requires a complex web of power structures, because its top line goal is to be stable and dependable. And stability within a complex landscape requires an equally complex network of power.
Crypto provides the exact opposite value: it cannot be controlled, no matter how robust your power structure is. It can be insured, at a significant cost, but not controlled.
That means in the face of even totalitarian powers someone could still move crypto across any boundary that is permeable to information, which it turns out is a set that roughly approximates the set of all boundaries.
This is a terrible way to pay for candy bars, because candy bars are not worth insuring.
But what I think the crypto opponents miss is that there is a set of transactions—some criminal, some legal, some immoral, some righteous—which cannot be made in a state controlled financial systems.
And that these transactions are what gives crypto value as a currency.
To me, where I would like the debate to go is not “is crypto a scam?” but “how does society protect people from the violence facilitated by crypto?”
Yes, financial “violence”, which can be insured against, but also real violence: human trafficking, extortion, etc.
We anarchists sometimes like to pretend that without rulers we will be freed to care for each other. But in the shadow of a history of violence, there will be more violence too.
And the “crypto is a scam” argument I fear is a red herring that distracts from this, the real issue.