My experience as an Android user is that React Native apps don't feel "Android native". Maybe it's because I only notice the apps that have the poorer UI, I don't know.
React Native apps can be made to feel native but it takes some knowledge and skill. In certain cases, a bit of native code might be required instead of off-the-shelf libs.
For example, I was looking for a way to perform certain computations on a stream of frames from the camera. Most libraries available I found would send the image frames to the JavaScript side first and do the computation there. Unfortunately, that was never 60fps because the amount of data being copied/serialized was too large. The solution was to write a bit of custom code that performs the computation on the native side and only ship the computed result (tiny JSON) to the JavaScript side. The end result was easily 60fps and felt 100% native.
