The problem Flutter has is highly highly dependent on Google, from funding to development.

That it is also the only real use case for Dart also doesn’t help matters.

While I agree the technology is very good and in some cases superior it doesn’t have a path to stable funding, seemingly. Google laid off a big chunk of Dart and Flutter teams last year, and there is no Expo to pickup the slack.

While Meta could do the same for React Native, Expo has always been there to pick up the slack and it receives bigger community support from the community too. For example Shopify has a few great well maintained RN libs