Hi again!
I know I am not even remotely the only person who, due to ADHS or Dyslexia or being a visual learning-type or a not super-tech-savvy person, finds it challenging to deal with a long list of settings without graphic UI.
At the very least there should be a ? button near each about:config setting to get an explanation of what it's for.
Otherwise it's a function that realistically only few people will make use of, which is a pity.
Another user-friendly idea would be to make the most relevant of these tweaks directly accessible from the normal Firefox Settings.
If Mozilla brags so much about how amazingly flexible and configurable Firefox is, but most of these settings are not accessible to common mortals, it's a rather empty bragging.
Be user friendly!