I think for the time being, there's no way to get around writing native UIs to get a native experience. Any sufficiently high level APIs will have to give up something. TUIs for me fill that niche because across any POSIX-compatible interface they will generally work the same, and modern high level languages make cross-compiling to terminals a breeze. Now to write a native UI across Windows, MacOS, Wayland and X11, that's a different story.

I’m happy to give up a lot; I’m not tied to fully-native-looking UIs for the types of things I’m talking about. Totally get that lowest common denominators will feel native nowhere. I just think it’s possible to do a lot better than the current state of TUIs.