I remember a very similar post last year, also about pronghorn.
Growing up here in Wyoming, I have seen a ridiculous amount of pronghorn taken, and I do have to say, they are probably the most poorly judged big game animals we have to offer. Pronghorn can get hard to judge, and when you see so many of them that is essentially becomes "shopping" for your animal, a 72" buck with decent diggers may seem like a standout from all the small bucks you have been seeing, that it seems mature. However often times with mule deer and elk, you don't even see any legal animals. Many people just don't have the self control for long enough to find a trophy pronghorn buck.
The last pronghorn buck I took green scored 82 3/8, and before finding him, I had laid eyes on probably 100-150 other bucks. I harvested him on the third day of my hunt. There were several bucks that were probably 75-78" that dang near got the bullet, I had to talk myself out of it, because I knew they likely weren't breaking my bar of 80", but knew they were close. However, I have spent hours looking at videos of bucks with known scores practicing to get better at judging goats, they are not easy. I keep pictures of 75", 80" and 85" goats on my phone to reference when glassing one up.
I completely understand what your getting at, and I too endorse the point of attempting to harvest mature animals, and letting the young ones walk. This post is not for people like me and you and others that already do this, there is no point to patting ourselves on the back. I think you made this post for the people that may want to do this, or haven't done it yet, but might try "trophy", or "mature animal" hunting yet, and you are attempting to prove a case for why this type of hunting can be more beneficial as a conservationist, and a hunter. I completely back you up on that. If that is what your trying to do, then I think there are a couple places where some change in tactics may help to better achieve your goal. Please don't take offense to this, I am trying to help your end goal....
I understand your frustration, I have been there too, but starting off a post on a defensive, and subtle threatening (will block you) tone is going to render far less success in changing people's minds, than something like suggesting a slightly alternative approach to the way one hunts. The vast majority of people here are intelligent, common sense folks, and if you present a fact based, non-confrontational, common sense argument, you stand a good chance at winning people over vs an argument that sounds like "I'm gonna say this and hurt some feelings and don't care about your feelings because I'm right about this". Even if everything in the latter argument is true, the fact is, if people with an opposed mindset enter your debate, and start off feeling disrespected, you certainly aren't going to change their mind, it will just be a pointless argument of opposed opinions.
I say all this because the same post last year rendered similar results to this one. Either people that already agreed with you continued to agree with you, or people that didn't agree just argued with you. No one's mind got changed, no one really considers the others methods, and no ground was really gained in accomplishing your goal.
I respect you, and I know you aren't necessarily here to make friends, shake hands and kiss babies, but because of my respect for you I felt compelled to write this post. We all should strive to learn and grow, as well as gain and give knowledge to and from each other, but for one person to listen to another, there must be a mutual respect brother!
I hope this post is taken as the way it is intended, there is a lot of frustration in our world today, and at times it can be challenging to have the "give a dam" to take the time and effort needed to present a challenging subject tactfully, but that is all I'm trying to do.
Take care, and God bless.
Happy independence day as well. America!
