Kinda... developing UIs is around 10x easier and faster, but you can get in trouble when you want to integrate with device APIs like Camera, Location, etc.
You also don't have such a rich ecosystem of third party libraries. For example, I think there's still no implementation of native ads for major ad networks, which can be a deal-breaker if you're working on a large consumer-facing app.
Regarding native C/C++ interop (thank God I no longer have to deal with this!), Flutter has dart:ffi. I'm not sure how it compares to JNI, but it can't be worse. In practice, you'd still end up dealing with the horrible NDK toolchain on Android, though.
You also don't have such a rich ecosystem of third party libraries. For example, I think there's still no implementation of native ads for major ad networks, which can be a deal-breaker if you're working on a large consumer-facing app.
Regarding native C/C++ interop (thank God I no longer have to deal with this!), Flutter has dart:ffi. I'm not sure how it compares to JNI, but it can't be worse. In practice, you'd still end up dealing with the horrible NDK toolchain on Android, though.