For the same reason Facebook puts a big loud warning in the developer console. People will follow any instructions they're given. "Press ctrl+shift+I and paste this in the box and you'll get a free puppy" "Put this in your address bar and your crush will be revealed" "Go to about:config and double click this thing, and then click this link and we'll show you nearby singles that want to hook up"
Firefox add-ons essentially have full, unrestricted access to your computer. Locking this down good and well is pretty important.
Firefox add-ons essentially have full, unrestricted access to your computer. Locking this down good and well is pretty important.