Absolutely! The article conflates hobbyist and professional web development. Having a play as a teenager in your free time? By all means, use single html, css and js file. With javascript modules, it's much nicer these days than it used to be in 2007 anyway. Working on a project in a company? You probably want all the guiding rails that package managers, type checking or bundling will give you anyway. Frameworks? With web components, you might not need them.