I'm a native app developer too (iOS and Android) and I've got some experience with Flutter.
I agree with most of your comment, but the only thing I'd add is that from what I've seen if your concern is the quality of apps then Flutter definitely is not where you'll go to find that. If anything, Flutter developers seem to care even less about the end-user experience and instead simply focus on their own productivity. The end results are often horrible with a ton of jank, UI weirdness, etc.
I agree with most of your comment, but the only thing I'd add is that from what I've seen if your concern is the quality of apps then Flutter definitely is not where you'll go to find that. If anything, Flutter developers seem to care even less about the end-user experience and instead simply focus on their own productivity. The end results are often horrible with a ton of jank, UI weirdness, etc.