To be honest, I'm glad. No development environment can be as great as to justify the horrible, juddery UX I experience as a user in the few apps that I know use it (and probably a few more where I only have a strong suspicion).
If that's really the case, I hope to be able to see the effects of that soon in Google Pay on iOS, which is even being touted as a showcase application by Flutter/Google: https://flutter.dev/showcase/google-pay