Oh, "more efficient" here isn't a refence to Tauri. It's a reference to the parent comment's mention of "(AppKit, win32, GTK, Qt, etc)".
I work on a framework (Dioxus Native) which I think sits at an interesting intersection of "rust" and "web": it renders using HTML/CSS (custom implementation, not using a webview) but it uses Rust scripting instead of JavaScript.
What's "rust scripting"? I don't see any mention of it in the docs nor dioxus native roadmap and AFAIK https://github.com/DioxusLabs/dioxus/tree/main/packages/inte... is used as the interpreter although I can't for the life of me figure out where the JS engine is actually instantiated.