Most of these so called experts have never killed an animal and if they did they wouldn't know how to field dress it! I'm at the point in life that I just walk away and leave them to wallow in their ignorance. My advice would be do the same.
That's not really a luxury I have. I also feel a bit of a responsibility to educate when possible. My wife asked me, after reading that letter to the editor, if I was mad. She was clearly not happy with it. I just laughed out loud reading it. It's an opportunity, not only to educate, but to expose some of these ignorant folks as true know-nothings.