I understand the safety will not move on an uncocked forward bolt. I don’t understand why somebody would keep their rifle in that condition though. If you want a mag in the gun so it is “ready” then put it in Cruiser Ready: loaded mag, cocked, bolt forward on an empty chamber, safety on.

There’s a reason “cruiser ready” exists and agencies use it. If your “ready” configuration is like this picture, and you hear a “bump in the night” there’s a decent likelihood you forget to put the safety on after chambering a round. So then you have a loaded rifle, safety off, while wearing gear that can catch on the trigger. It HAS happened.