We used to also build our own computers and amateur radio sets. Now we buy them. Are we losing anything? Probably. Have we gained anything? Probably. Does this article ask a lot of rhetorical questions? Yes.
I agree. To extend the metaphor of the article a little more, we stop worrying about our moms cleaning our rooms when we move out, buy our own furnitures and pay our own rent. The web equivalent would be setting up/coding your own cloud server and paying for the servers.
I don't think that's a realistic proposition for many. I wonder what the author think is the ideal web. Is it where everything stays static? Look at the v1 of Twitter or Facebook. They have changed dramatically since then but I believe they changed for the better.