I don't mind the electron apps... also, am mostly okay seeing material-ui like designs in applications even when non-native... React Native should be native to the environment, though uncertain as to how theme friendly, I haven't played with it... for my needs Cordova and Electron have been good enough so far.
But I can see how they wouldn't be the preference.
Reactive native I'm more open minded about, but I'll reserve judgment until I see how well the obey things like themeing.