The article tries to paint Bitcoin as something different and better because it is deliberately slow, painful, and expensive to use, but those aren't actually good qualities in a currency. You want something fast, simple, and cheap to use, and merely slow, painful, and expensive to fake, or to steal.
That's the big issue with crypto, and nobody has solved that problem yet.
@Aether remember there are different types of tools for transferring money as well. You can use cash, or a check, or a fedwire. You don't want to use a fedwire to send $20, but $150,000? not a bad option.