We considered Flutter, React Native, Kotlin Multiplatform Mobile and pure native as solutions. The factors we looked at were size of hiring market, ease of conversion of web codebase and the effectiveness of the current team in that framework.
This is one of the most pathetic answers possible. You give nothing on user bases and adoption of both dart and flutter, internal adoption within google, it's use of Dart and Flutter for the frontend of Fuschia, googles desire to control a widespread language, the open-source nature of Flutter, the list goes on. You just provide a list of PRODUCT's that have been killed off, not an entire language and frameworks. Your idea that google will just kill it off is a meme, and doesn't take into account it's usefulness to google in the wider world.
In terms of user bases, Orkut (RIP) had north of 60 million users when Google killed it. It was the primary social network in multiple countries.
Maybe the biggest user base killed off was Google Reader (RIP), it was the world's foremost RSS aggregator with no forseable competition and no obvious exact replacement for all those users to go to when GReader was turned off.
In terms of languages and frameworks, the Noop language was killed more by Kotlin than by Google but Google App Engine has been crushed even if the name lives on, the old SDKs you relied on are mostly gone. There all alternatives, but not quite as attractive.
Lastly though, that page i linked has a LOT of examples on it. I feel that adds weight.
Hopefully this longer comment goes some way to assuage the idea that my prior comment was a thoughtless throwaway.
Again you're predominantly talking products, Orkut was killed off in favour of Google+ which failed for its own reasons. Your example of Noop is weak, at its peak (which you couldn't even really point to) it had a minute fraction of the adoption of what Dart and Flutter has today. It was an experiment with absolutely minor resources put into it as a mostly 20% project, and basically wanted to be what Kotlin already was which had all the resources that came with Jetbrains full backing.
You ignore the points about Google's long term aims of control of a programming language that runs on all platforms. This gives them overall control of multiple ecosystems. Dart is the language that they are using to push Flutter as the framework for controlling whole ecosystems. Fuschia is the project they're going to push for to take over Android.
The webpage doesn't really add weight, because context matters and you are seemingly ignoring the entire context of the a) open-source nature b) business goals c) current adoption d) it's not a product, all to try a push a flippant opinion that doesn't really work when you understand the thought and ideas behind Dart/Flutter.
Main reason I'm replying is you've misspelled Fuchsia as Fuschia and to ramble a bit, maybe this was on purpose and if so that's ok.
https://fuchsia.dev/
Some more ramblings -
My understanding with Fuchsia and programming languages,is they ditched Google's GoLang for Rust, they don't like GCs, but they're keeping Flutter due developer productivity, dart's hotreload feature, etc.
If Fuchsia ends up in the phone space, they would want it to run android apps,
work is going on with starnic for running unmodified linux apps.
Also I watched some of the Fosdem ubuntu stand talks, the Flutter desktop talk
had an interesting demo, with the Ubuntu person saying all new ubuntu apps are to be Flutter apps.
Tidbit - The ubuntu team is working on Full Multi-window for Flutter desktop for windows, mac and linux.
