I had a play, then hit a wall
I enjoyed learning Flutter and Dart for fun hacky-home projects (it is cool) and then wondered what the commercial drawbacks might be - the first one I always check is developers. Are there any even remotely nearby. The answer was: no. I could find Dart/Flutter agencies who would "build a front end for your backend" but recruitment seemed to be a dead end. If they keep pouring money into it, perhaps it will pick up over time.