You're not using native UI. You're emulating the UI by re-painting it. No matter what you call it, it's an emulation of the native UI, which means it can become out of sync.

Currently React Native can bridge with all Windows platforms, MacOS, Android, iOS. Web can be targeted via React Native Web fork or a wrapper like ReactXP.

That is a more attractive option than an emulated UI. It's similar to wxWidgets vs QT. I much prefer bridging to emulation.