This is utterly nonsense. The settings there are the defaults. It even says so on the website. "Default Preferences" Just a quick trivial check of my local p

This is utterly nonsense. The settings there are the defaults. It even says so on the website. "Default Preferences" Just a quick trivial check of my local preferences and those "exposed" on the site show stuff either missing or not as per my tweaks. In other words, this is exposing what the version of firefox you're running is.