One could say that the Layer 2 tokens of crypto could be something like a gun in this analogy. But the current incarnations are like muskets. IMO the lightning network is like a wet flintlock sometimes...
You make a good point about typing in the wrong address or key. Mostly it's probably just my anxiety. Still a PITA in the current incarnation, but most of that is just the learning curve. It's a lot easier once you get used to it. So someone born into it has a lot less trouble.
I don't often use BTC though because of the fees and volatility. The other crypto coins solve that. The group of all cryptos as a whole fills the shoes of what some lack.
RE: Economic Gunpowder