Well said Petera. If I had not had this open heart surgery, I probably would not have had all this free time to experiment; so I can look at that event in a more positive light. Maybe. Nah, never mind. Haha.
Luckily in my case I KNOW 100% my hardware is good since I have a SD card that DOES go to my wifi.
Being an engineer, having spent 30+ years playing detective finding software and hardware problems for my customers, being sent out as last resort by manufacturing companies to solve these issues all others tried and failed to, identifying software bugs, knowing the only way to solve these issues is TO CHANGE ONLY ONE THING AT A TIME, ya, I feel comfortable doing this. If I ever fudged up a system file I certainly would not leave it so and continue on.
I am beginning to conclude there is a very slight syntax change needed in the wpa_supplicant.conf file that has not been identified yet: remember, having to add the 'country=US' snuck in here with few clearly stating it is now a requirement.
Knowing now that interfaces is where the wifi is actually configured is an important step to learn. It may lead me to being able to ignore this wpa_supplicant.conf intermediate step. I know my openhabian did NOT require a wpa_supplicant.conf file - they handled wifi via a section in their own openhad.conf file - that is where I put my SSID/PW and THEY used it as required to turn on wifi and gain access...