Hi Frantisek Kolar

Thanks a lot for your response. Here are my thoughts regarding your questions.

1. renderComponent is pretty cool. However, it still comes with the delta sign which indicates that this API is still experimental/private. So by using renderComponent you are basically using an internal API. That being said I think chances are very high that renderComponent will make it to a future version of Angular.
2. entryComponents is not needed anymore. In fact, entryComponent is gone in Angular 9.
3. To use a Form inside a lazy-loaded component you currently still need a module which imports the ReactiveFormsModule or the FormsModule. As shown with the material components.

I hope that’s helpful.