Apparently the AMD tech I corresponded with was correct. The issue was with Blender.
I downloaded the Blender 2.92 alpha build. Then updated the AMD driver to 20.11.3 ( I did not try the 20.12.1 driver given that my issues began with 20.11.3) Blender 2.92 now renders my files perfectly with AMD version 20.11.3.
Since 2.92 is an alpha version the developer cautions that a Blender file could become corrupted. Easy to avoid by not saving over a good file.
No, man. If the issue were with Blender, it either would've appears years ago, or wouldn't have affected legacy versions of Blender.
As it stands, AMD made a change that broke compatibility, and has shoved the issue off onto the Blender devs, ensuring that all legacy versions of Blender with Eevee support will be forever broken on AMD cards.
Just downloaded 2.93 Alpha. 2.92 Beta is also available. 2.93 Alpha seems to work fine during the few minutes that I used it. Rendering not an issue.
This video will explain 2.93.
Never had an issue like this before, really disappointed. I hope they come out with another driver update really soon and fix this mess because I can't work like this.
AMD just released Version 21.1.1.
Blender 2.92 alpha and Blender 2.93 alpha no longer render. Wireframe also does not function. I reverted, again, to 20.12.1. Render and Wireframe functions ok with 20.12.1.