What we had actually was tooling fatigue, and not language features fatigue. Today, with CLI tools like the Angular CLI, we have a ready to use optimized bundle via one out of the box CLI command, so no longer do we have to learn how to configure Gulp or Webpack.
I'm very glad that I decided not to learn Webpack and stick to the CLI, now Webpack is going to be replaced by Bazel transparently, and from a user perspective, nothing changes other than getting an even faster build and a smaller bundle transparently, without having to be a build tools expert.
I can now focus on developing the application and not the tooling, which is awesome for me. There are only so many hours in the day and I like to focus my learning budget on what moves the needle most.