You both say this but the interesting thing is that Fuchsia support is creeping up in more essential low level software like LLVM, Rust, WebKit and the devs actually have Chrome already running on the platform for years. Dart/Flutter is used throughout the OS and used in many apps today.

From day 0 on launch, you can expect Fuchsia to run your Dart apps and to run existing Android apps via a tool called Machina (Zircon hypervisor running Linux kernel). If Fuchsia benefits from the Flutter apps being made and gives Google more complete control over the OS unlike Android, then it looks highly unlikely that it will be killed.

In reality as Fuchsia is being ’dog-fooded’ on Google devices it is increasingly likely that Android will be killed.

The fact that ChromeOS had to gain Android support speaks loudly about what might win in the end.

If Fuchsia ever gets released, I bet ART will replace Flutter.

It is already being ported to run on Fuchsia anyway.

ART isn't a UI framework, it can't "replace" Flutter. You can run Flutter apps in ART, the article even talks about doing so.

Indeed it the basis of the Android stack, so it plugs naturally with everything written in Java and Kotlin for Android.

Flutter has zero relationship with ART, it just plugs into Android via the NDK, like anyone else using C++ code.