[AnthonyMouse]

Someone says that TLS secures your credit card number when buying things online. Which it does.

You say that it doesn't do that, because someone could break into your house and install a hidden camera to capture you entering in your credit card number and it doesn't prevent that.

But you use other things to prevent that. That isn't the kind of security that TLS claims to provide.

And notably, there aren't a lot of alternatives to the kind of trust that blockchains would allow you to avoid placing in the likes of PayPal.