Yes it is mostly cocked. But the engagement is enormous, I would guess .125 of an inch. Plus you have a firing pin safety in addition. Basically unless you pull the trigger all the way to the rear, it is not going off.
I would worry more about dying because my ball joint broke in a new car, as far as pure failure is concerned.
Then again there are some people who have to have a manual safety because they alway have their finger on the trigger and are "snap happy" and unless there is something to stop them, eventually they have an AD and are simply astounded that they actaully had that big of brain lapse.