The best UIs, such as visual studio code, are now written in HTML.

Calling vsc the best design is quite something.

HTML has plenty to learn from even Windows Forms. Layouting only recently became okayish on the web.

You think the likes of GTK and Qt give a better UI than VS Code? I'll tell you why there are no mature bindings in Rust for these toolkits and it has nothing to do with OOP. It's because there's no demand for it.

Qt? Definitely. But I have also seen very great gtk apps. Electron apps always feel “non-native” and laggish. Honestly, try out the telegram qt app, it is lightning fast compared to any electron app.