Honestly that's a very real concern. From what I hear, the Android team does not speak glowingly of the Flutter team at IO. Also there appears to be a power struggle between the Flutter and Jetpack Compose teams to become the next 'official' way of developing Android apps, in parallel to Apple bringing out SwiftUI. Time will tell.

Given what we've all been reading lately about Google's LPA cycle (launch, get promoted, abandon) it seems likely that flutter will end up like React Native: kinda usable, but never really polished enough, it seems they just stopped most work on it before the finish line.