> Except Flutter is a subpar experience on every platform because of just how slightly different it behaves
I'm not sure this is true. If you check the pulse of social media, most Flutter devs think Flutter is great for Android, iOS and desktop but needs help on web. Canonical at least rewrote their installer in Flutter and anything new they develop is in Flutter. Devs are hoping that the WASM support currently shipping in `master` [1] will solve for web.