(ballscrewbob please see below)
(to those that replied with technical advice, thank you!)
I have sufficiently resolved the issues and will be able use the tools as intended.
After reading the Arduino Uno R3 schematic, I found the correct CPU pin (DIP and SMD) as well as PCB for the LED used by BLINK. The LED shares with one of the ICSP pins. I had initially confused the board pin number with the chip pin number. By virtue of the shared pin, the LED illuminates on the Arduino Uno R3 PCB even though the target is externally attached by ICSP (where the Arduino Uno R3 is running ArduinoISP.) There were no instances of code executing in the wrong place, just a mis-identification of the BLINK LED placement in the circuit.
The previously recommended 10 uF capacitor was not necessary and was removed. The Arduino Uno R3 is now set as ISP, serves that function as intended and does not require any modifications to serve as ICSP device.
To "ballscrewbob" (in response to your postings on 10/19/2021 of an administrative matter into this technical topic 916097): Your posts into this thread regarding my incorrect other posting was unfortunate and inappropriate. In forums I moderate, advice and counsel to users is ALWAYS provided individually, NEVER in a thread. Complaints between users are resolved through moderatators, not within threads. I do not know if your action is standard moderation practice in arduino.cc forum, but it is corrosive and discourages participation.