@"John Snyders-Oracle" Brilliant article, thanks for sharing your thoughts. I agree with your final remarks I think that it should if for no other reason than I believe that APEX should be able to do anything that other web platforms/frameworks can do. It could be that in the future being a PWA is simply what is expected when you claim to have good mobile support.
APEX has always been different from popular UI frameworks like Angular, React, etc. in that it starts with data and adds UI while all other frameworks start with UI and add data using REST calls. The Interactive Grid component has started to bring the two approaches closer by introducing separation of model & presentation but nevertheless APEX remains a data-driven framework, especially when you consider session state and the fact that the application definition itself is metadata stored in Oracle tables. Universal Theme was a radical improvement to the UI side of APEX but at its core APEX remains a data-driven framework. UT addresses the responsive web design problem but that is now considered table stakes for any self-respecting modern application - mobile support now means offline support, access to device features (camera, GPS, etc.). Also, APEX is a proprietary product tied to Oracle & PL/SQL, it can not be considered as a general purpose application development framework.
I don't really have anything to add, curious to hear what the rest of the community thinks.
Thanks