txmarsh...
The reality, like you say, is that many hunters can't tell the difference like the rest of us. Most of us have learned in some way or another, that if you don't know exactly what you're shooting at, 100% of the time, you just don't shoot. It's hard to accept for some, but unless you know for certain what your target is, you're guaranteed to kill an animal that is at some point, not what you bargained for...
Too many people operate under the "Ready..... Fire.... Aim" principle.
Time, patience, and experience will ensure that none of your buddies kill a button buck by accident. In the meantime, the best they can do is watch, observe, and not squeeze the trigger until they're sure it's a doe.