That's not at all true, any and all wizards or configuration dialogues would go over a small subset of settings deemed 'important' by someone. There isn't a single program out there anywhere that has a walkthrough that goes through
all configuration options. At least I don't believe one to exist, I would certainly be enthusiastic to be proven wrong!
About:config in Firefox has 3930 lines. That would be a very, very, very long walkthrough :) I can see it now, "Okay, to use Firefox, you will now have to click 'next' 4000 times." Thanks.