At https://www.waiterio.com we use plain webviews for Android, iOS and macOS without any framework and Electron for Windows and Linux. The problem with frameworks is that once a year Apple make a change to their signature and it can break the framework for several weeks/months before a fix/hack around is found. By using native webviews you can quickly implement the change needed and get back online in days.
Projects like Tauri use libraries like Wry[1], though. Getting Wry fixed to use the new API shouldn't be any more difficult than the work you need to do, right? And that work is then shared by everyone using the project.
[1]: https://github.com/tauri-apps/wry
Edit to correct that Tauri uses Wry and not Webview.