A lot of web development problems are solved. That's what this author and many other very experienced jaded principal engineers try to say year after year.

Because you think whatever you want to pretend your web software isn't MVC isn't solved doesn't mean it's true. Oh brother, MVVM, Model-template-view (no offense, Simon), come on.

You define resources on an HTML page, the browser loads them, renders a page, loads scripts, and makes AJAX calls.

You don't need build scripts for this. More over, these frameworks and build scripts DON'T SOLVE PROBLEMS. They move them. They want you to become a React developer. Not a software engineer who writes web software.

They don't solve routing, because you rewrite it every year. They don't solve bundling, because you change bundlers every year. They don't solve event handling, because they just move the chain of calls where you define the listener.

It's all a lie.