[Mipila]

Cant speak for Vue or Solid, but in Angular this has never been a big issue like it is in react. There is state of course but it is not something you have to actively think about all the time. State is kept as properties in classes, directly on your component or (when it needs to be shared) in services that can be injected. Angualar change detection will update the view when needed. You can argue about the performance of this, but in my experience it is easier on the developer.

[koakuma-chan]

Angular has NgRx, which is, AFAIK, the same as RTK.

[Mipila]

As my previous comment suggests, I don't see why people feel like this is needed. It does seem to be used though.