Looking over the article again, I'd say your right. It was the statement "The web is built around server-side rendering." that made me feel that way. As a whole you're right.
However, I didn't think everyone was out making landing pages with React and VueJS. Maybe they are.
If you're building an app, yeah use React.
If you want to put some contact info on the internet, there's no reason it can't be vanilla HTML.
Or at least that's how I read it.