Odd complaint but interesting list of about:config options! I must be in the tiny minority that has actually _used_ all of these right-click menu items at one time or another.

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yreg 6 hours ago | parent [-]

I mean "Set as Desktop background" seems to definitely be an overkill to have on a speed dial.

Unfortunately that one is not removable through about:config.

	▲	debugnik 5 hours ago \| parent \| next [-]
		That one gets used a lot when someone leaves their laptop unlocked at college.
	▲	plorkyeran 4 hours ago \| parent \| prev [-]
		That one's been there since the very early days of Netscape Navigator. It's been a few decades since I last clicked on it, but that's mostly because I haven't set my desktop wallpaper in a few decades and I suspect using that isn't too rare for the people who do set wallpaper?