You have to look at what teams at Google are using Flutter. Any dev tool Google officially releases tends to be funded by some product that actually likes/uses it.
There are a lot of teams using it, which is why it's still getting so much support. If you see Google apps moving away from it, then it's time to start looking for an alternative.
It's also why AngularDart still exists and is getting updated. There are large projects that use it, so they will keep supporting it.
The fact Pay and Ads both use, along with Youtube Create even, is a pretty good sign because if they have a non-trivial codebase of flutter/dart app(s) then killing it would impact all those teams who are doing important work. I've debated trying flutter/dart a few times and this makes me feel more willing to try it.
Ads is the reason Dart is still around, they saved the team after the project folded, after migrating from GWT to AngularDart, they weren't into doing yet another rewrite.
> Ads is the reason Dart is still around, they saved the team after the project folded,
Wasn't it Analytics which had Dart? But I do remember something about Ads saving it.
> they weren't into doing yet another rewrite.
It all depends on politics within the company. For example: youtube was hastily rewritten using alpha/beta versions of Polymer targeting Custom Elements v0. The moment they did that v0 was deprecated.
So within next 4 years they rewrote Youtube again with Polymer version targeting Custom Elements v1. The moment they did that, Polymer was deprecated and replaced with lit.
Even though they haven't rewritten Youtube, they've now spent time integrating Wiz, an internal Google framework (that also got merged with Angular).
The costs of rewrites don't matter at Google as much as promotions.
You have to look at what teams at Google are using Flutter. Any dev tool Google officially releases tends to be funded by some product that actually likes/uses it.
Current list from https://flutter.dev/showcase: GPay, Earth, Ads (this is a big one), and others.
There are a lot of teams using it, which is why it's still getting so much support. If you see Google apps moving away from it, then it's time to start looking for an alternative.
It's also why AngularDart still exists and is getting updated. There are large projects that use it, so they will keep supporting it.