I've tried flutter components and as much I liked Dart, for some reason I wasn't a fan of the Layout system and the archived outputs are a bit bulky so those are a few reason that drift me away from it.
The layout system is my favorite thing about Flutter. For one, there's only one not Android vs iOS. Secondly, it's not CSS. As a bonus, it's easy to compose or programmatically generate.
I'd agree that it's easy to compose but the API of the properties the components expose are inconsistent in certain cases and if I can get a native build out of it, I shouldn't
be complaining about a minor issue