A swap line between two central banks is pretty much the same as a Lightning channel between two nodes.
So the new financial infrastructure is this.
Bitcoin is the reserve asset backed by central banks
Lightning is the swap lines between central banks.
Cashu is the IOUs issued by the commercial banks.
It doesn’t take a genius to see that this financial structure will take over, and Bitcoin will be the store of value, medium of exchange, and unit of account.
Right now, the aim of stablecoins is to preserve liquidity in relation to the unit of account, USD, but that will eventually go away. But it will be a bumpy ride for USD fiat holders and even more bumpy for non-USD fiat holders