This reminds me about how many people don't use domain names at all anymore. Many people probably type the name of their bank into the search bar and visit the first result. I've seen people literally pull up google to search for yahoo mail or ebay.
Domain names are still useful, for a start they provide some level of authentication when mixed with cryptography. (If you visit https://news.ycombinator.com, you can be relatively sure there is no MITM with certain conditions present).
It would be interesting to see how this system can be adapted to work with our current Internet infrastructure.