I still hunt groundhogs with an arrow nocked. Still hunting deer or hogs-depends on the cover, footing, and if I think a shot may be imminent.
I am sure archers have hurt themselves with nocked arrows but for the life of me, I don't see how it's possible. I always carry the bow to the side with arrow pointed down and back. Unless you are holding the bow backwards I just don't see it happening.
Also, a very slow careful still hunting mode would not cause trip/fall accidents. Throw in normal paced walking, snow, mud, stream crossings, etc, etc - now the arrow goes in the quiver.