

So, I haven’t read much about it, but right on the page you’ve linked it shows banks on a diagram explaining how it works. If banks are involved, it is not permisionless - banks can block and censor transactions, they can refuse to open an account for you at all, etc.
What authority is needed when blockchain is used as a currency, what is there to enforce?
You can buy much more than drugs using cryptocurrency, so this is absolutely false.