We smoke meat for 100's of customers, some of the worst hygiene practices that I have seen have been by so called "Game Dealers" shocking some of it, not even dog worthy some it. I have backed loads of stuff and it has nearly caused fall outs.
Problem is with this geezer is traceability , who is to blame if someone gets sick. Saying that, sickness is quite rare with game, especially venison, I've not known of any.