There is no question developing components in UI Framework definately require a different level of experience. I found it extremely beneficial to view courses about building standard web components (for example this Web Components & Stencil.js - Build Custom HTML Elements) . What I learned there I will probably use in my current Service Portal project and build some native web components. And I don't mean Service Portal providers.

But if any of you saw the preview of the new UI Building coming in Quebec you probably realise that what we see now is just a small part of what is coming. It is super exiting working with the new UI Builder.