Your post touches too many topics. But on RxJS, yes, it is conceptually complex. I never quite understood whether one should use - a container component with

Your post touches too many topics. But on RxJS, yes, it is conceptually complex. I never quite understood whether one should use - a container component with value-type @Inputs passed down - a service emitting an Observable and subscribing to that, then passing value-types into the template - an Observable as @Input - now Signals? (haven't used those yet.) Years later though I read a book on functional programming and the whole nightmare of arrays within Observables suddenly made sense.