Not to defend the idea in the article, but that comment screams that you just read the headline and not the article.

If you had read the article, you would know that the author doesn’t want to get rid of routable addresses, they want to replace the current system of IP address assignments with a cryptographic address system, which doesn’t rely on a central authority to assign or manage addresses and traffic routing.

Pretending like the author just wants to just abolish all types of routing addresses is dishonest.