This is a pompously written puff piece. Moving logic to the client is the right choice for an application, and the wrong choice for mostly non-interactive content. Know what you're building and choose the right tools/use the right techniques.

Javascript has been (and kind of continues to be) a mess, but thankfully you can compile almost anything to WebASM these days, and 95% of people have browsers that support WebASM, so if you want to build your app in Rust with QT have at it.