I think there are a lot of issues that could improve around youth hunting. I was lucky enough to benefit from youth hunts in the late 90's when they were becoming the norm around the country, but so were half a dozen of my cousins and of that group only 1 or 2 of that group hunt today. Unfortunately youth programs have not been successful at creating or retaining new hunters that otherwise wouldn't exist. As far as I'm concerned, regulations around youth hunting should be driven by data about retention.
The problem you get with youth programs are going beyond kids just being trigger pullers and getting them acclimated to the challenges of woodsmenship (and Woodwomenship) and access. The problem with the end of youth programs at age 16 or 18 is that you have kids so busy with activities and likely moving away for college or a job which creates many challenges around hunting even for experienced people. You end up pulling the carpet out from under new hunters. These are all issues to look at helping ease.
I do not think there is much reason in arguing whether 10 or 12 or 14 is the right age for all kids to be hunting, but I really start to wonder whether a 6 year old who just learned to tie his shoe can comprehend the ethical and moral responsibility of killing a deer. That is a huge problem IMO about youth hunting. The question is always can the kid handle a firearm safely and competently and not whether or not they understand the serious nature of taking a life and utilizing the resources that come from the animal. Its only natural to become somewhat numb to the violence within hunting and I think its a dangerous thing for a child to become numb to the act before they realize what is going on.
These discussions shouldn't be about my kids were so competent at X age, but rather how you frame programs for kids in family's that don't hunt or are part of more casual hunting culture. I also think that new adult hunting programs need the same resources as youth hunting programs because they are more successful at retaining lifelong hunters.