I really don't understand how/why people deny reality so hard when it comes to Flutter. Reminds me a bit of years ago when people were still scoffing at the idea of anyone actually adopting JavaScript to write web servers with while Node.js was very obviously eating up the market.
It eats the market indeed, and also presents business opportunities for folks like myself, jumping in writing C++ addons, or completely replacing it with Java, .NET, Go, Rust,....
All the more reason why it's important to have an accurate read on the market! I for one also know a few people who've made a pretty penny writing native integrations for React Native and now Flutter apps.