The original post in this thread simply said "in a back pack" as opposed to "backpacking" but I will agree it has gone off the rails a bit. Level of training is all relative, and I am sure there are people on this forum I wouldn't want to be 1000 yards from with a gun in their hands but I do feel it is misguided to assume that everyone on here is either geriatric or inept. That being said, people should know their own limits, health restrictions, and capabilities.
You are right, the survivability is still low regardless, but I feel it is better to have more people trained and educated than not, even about the fact that they may try and fail to save someone. I have two former coworkers who managed to save patients their first time ever doing CPR on a real person. I believe no AED was present for one but possibly both of those instances. Our current med instructor is a former PJ and worked as an EMT and said he has never done CPR on a patient that survived. It is what it is, but the current AHA BLS course does offer some other first aide training which could be valuable for hunters. I think raising the baseline is a good thing, and as
@Muddyboots said, the benefits extend beyond hunting.