Let's be honest, it's the easiest. I've been trying to write UIs in pure rust and python recently and let me tell you, it's a drag.

Some frameworks don't even support writing your own components, some don't allow reusing parts of the UI, some don't even have proper layout engines you can modify, theming can be difficult, others dont have reactive values, most don't have a fast dev loop (make a change, see it, repeat), and so on. I've even tried using game engines like Godot and Bevy.

We like complaining about Electron, but let's be serious, as bad as it is, the other stuff is worse.