I think the most important aspect is that Lightning Nodes are just sending bitcoin transactions, the whole system is trustless, the node relying your transaction to destination can't steal your money any more then bitcoin full node relying your transaction to miners can.
Thanks. That was very unsatisfying, though. He's right that there are usually thresholds where money-transmitter laws kick in, but having to track that and refrain once you hit the limit would be onerous and limiting.
I think the most important aspect is that Lightning Nodes are just sending bitcoin transactions, the whole system is trustless, the node relying your transaction to destination can't steal your money any more then bitcoin full node relying your transaction to miners can.