I think you missed the point here, doctor, lawyers and otherwise supposedly busy non-advanced users will not delve in about:config at all, hence cannot waste any of their time there.
It's only the advanced users who are willing go through this path because they want to tweak a settings. And the question would be, is it really worth making such an impractical tool out of about:config and thus wasting time of advanced users when it was designed for their own use, for the sake of keeping non-advanced users out this setting panel.
It might be good for you to remember that those "masses" are just people with other things to do with their lives - they're doctors, lawyers, concert violinists, nuclear physicists, biologists, teachers, ... and they just want their damned browser to work without having to mess around, and preferably not break with cryptic error messages they don't care about, because, frankly, they have better things to do.