There are forks, and there are forks. If you take a codebase like Blink, fork it, and commit to maintaining that fork entirely by yourself independent of the up

There are forks, and there are forks. If you take a codebase like Blink, fork it, and commit to maintaining that fork entirely by yourself independent of the upstream then yeah, what the upstream does at that point is kinda irrelevant. If, however, you're still relying on upstream for important patches and you're just rebasing your small changeset on top of that every so often, then there are limits to how far you can diverge from upstream before pulling in those necessary changes becomes impractical. If I understand correctly, Edge, Opera, Brave, Vivaldi, etc are all running on the later type of Blink "fork". Does Google still contribute to Webkit? I was under the impression that stopped a long time ago after Blink and Webkit sufficiently diverged.