Ok, after playing around with it a bit more I've discovered a few things and odd behaviors, and I am coining the term "Phantom Hotkeys" (unless of course someone has already used it, then I'm claiming, "Great minds think alike!":
It seems that the "Phantom Hotkeys" only take effect when you are actively in/on the "Scenes" dock, ie. clicked on/in the dock, then the 1st letter of each scene acts as a hotkey. If you are clicked in/on the "sources dock," then the 1st letter of the different scenes
do not act as "phantom hotkeys"...!!!! Although I did not understand it at first, I believe this is what AaronD meant when he said:
...If it's more like an auto-completion, yes, the Scene list does that too. The trick there, is to not have the Scene list in focus. Click somewhere else, and then the auto-select doesn't happen.
My setup: I set hotkeys "Q,W,A,S" because they create a square on the keyboard that corresponds to way the scenes show up in my OBS Scene Dock, set to display as "Grid Mode" which, for the most part, corresponds to the way our stage is configured:
Q = Lectern // W = TV
A = Communion // S = Full
***As a janky workaround, I renamed my "Pulpit" scene to "Lectern" to avoid the conflict with hotkey "P" that I am using for turning on/off the Psalm scripture "Text Source" named "Psalm." I don't trust myself or others to not be active, clicked in/on, "in focus" of the Scene list and have the "Phantom Hotkeys" switch the scene on us. It would be nice if they had an option to turn on/off this "auto-complete," 1st letter of the scene, Phantom Hotkey feature. Perhaps it is useful if you have a gazillion different scenes, but for us small-time users I think it is annoying, and since you can assign hotkeys as you wish, you could have the system simply auto assign the hotkey to the 1st letter of the scene, or just let the use do so.
@ArronD: After playing around and rereading your response, I think I am understanding what you meant more and more. I am putting it into my own words that helped me clarify and understand it better for myself, perhaps it will help others as well. Thanks so much for your help, I feel I have wrapped my head around the issue and, although annoying, I am glad I understand what is happening and why, and now know the options I have to deal with it. THANKS!