Until Flutter is actually endorsed by the Android team I wouldn't even bother.

PWAs are being pushed by the Chrome team and Microsoft, which I have more faith than on Dart/Flutter, specially as skills to sell.

Likewise for C++ with native views, Qt or Xamarin.

What I care about is using a language where Flutter is the last hope to make it relevant in the market.

I don't need another one to pile on my Turbo Pascal, Oberon, Delphi list.