There is no legitimate reason to cut a deers throat whatsoever, none. Also, cutting a deers throat is a definate no-no if you plan on mounting that trophy....
Many generations ago it was believed that quickly draining a wild animals blood was beneficial to the meat, it isn't.
If anyone is still cutting a deers throat, for whatever reasons they believe they are doing it for, all they are really doing is exposing even more of the meat to unwanted bacterias.
Ronn, I think the answer to your question is, More than likely when a hunter approaches a downed deer that hasn't expired,,, in most cases the hunters are only armed with high powered rifles so the safest option is to cut the suffering deers throat... It's not something any of us want to ever have to do.
Democracy is two wolves and a lamb voting on what to have for lunch.
Liberty is a well-armed lamb contesting the outcome of the vote.