I don’t have a good answer to the framework question, but I do have an opinion about cross-platform. Why make cross-platform a priority over efficiency and user experience? I bounce between Mac and Windows daily, and my least favorite apps are those that try to run on both. They are often resource hogs and provide a UI experience that feels worse than native apps. Electron apps have the least bad UI experience, but are resource hogs. One app I use for work, Mendeley, uses Qt for its UI I believe, and it’s garbage on both platforms- so I use the web interface instead. Give me a good native app instead of a suboptimal cross platform one.

I often think the issue isn’t cross platform though: it’s that there is a cohort of developers who know a toolchain (JS+web), and use frameworks that let them live in that instead of investing the time and effort to learn how to write an app well using a toolchain not built for those focused on web/browser models of programming.