Taking away options from users because they don't know well enough can be kind of a self-full-filling prophecy, too. You cater to newbies, you get more and better newbies, entitled ones.

Stuff should be nice to use, of course, and shouldn't have friendly green buttons that makes it shoot knives at you etc. but it also shouldn't be less complex than it needs to be. If you have nothing left to take away you have perfection; if you still keep taking away stuff, you don't have even more perfection, you're just breaking things.

I never heard anyone complain that this option is there, or that it caused any trouble.. so what is this based on? Where are the petitions to remove this option that causes so much grief?

And why stop there? Imagine all the bad stuff you can do with the printer settings. Why are there options that allow people to waste ink, paper, or even maybe damage their printer? How many people threw away their printer, damaging the environment, because they thought it was broken... when all that happened was their cat walking over the keyboard and misconfiguring it? There might be actual kids choking on toxic fumes from those printers right now, nevermind the environment; and we worry about a website not working.

The Firefox options dialog is still kind of messy, and would be even if half of the options were removed. Take some leads from Opera :) Just taking away things doesn't automatically help, logically ordering them while also putting them in tiers of expertise does.

[By the way, all those keyboard shortcuts? They have to go, "hacker news readers" can get them back by editing an .ini setting -- the risk is just too great that someone might open the dev tools and then complain about weird rectangles on their screen, or to fail to convert because the website isn't as pretty as it could be]