There's some interesting comments regarding the article “The Power of VCL.NET”, from the original article which I took the liberty of copying from the Borland newsgroups.
Interested people who wants to know why Delphi.NET can assist you in migrating from Delphi Win32 faster, should read those comments.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes