Just because the technology exists, doesn't mean you have to use it. Many hunters choose more primitive methods to challenge themselves. Even with the most advanced technology, there will still be some using this new technology and many of them will still be challenged to get a kill.

I think part of the problem comes from hunters not wanting to see other groups of hunters taking more game and leaving less for them. If everyone is forced to hunt with a selfbow and homemade arrows, then only the super dedicated will take big game. More trophies for them. Otherwise, so what if someone with lesser talents and abilities decides to take an animal with a method more in line with their skills.