I worked on a team the switched v2 of our product from Python + QT to Tauri specifically to get away from QT. If you have any kind of specific design requirements, QT is pain. The ability to use the frontend web stack is a huge win especially for a team that already has frontend developers.
Rust was a nice bonus.
Doesn't qt also offers a webview solution?
It’s very basic. Good enough for oauth flow but not much beyond that, definitely not to host your entire UI. Also I don’t see what the point of that would be.
My point it's that you said you changed from QT to Tauri because of being able to use frontend frameworks but QT also allows you to do the same. Anki does something like that, but since you mentioned rust that might be the reason of the change to Tauri.