Restrictions based on points don't protect the smaller, basket-racked bucks that should be at the top of the "don't shoot" list.
True but I have multiple deer right now that are mature but have a screwed up antler on one side that makes him shy of 13 inches
This. I have had to pass on several mature bucks that had obviously poor antlers that would be a good cull buck and could not shoot them due to AR. But AR restrictions do protect the smaller bucks that a lot of hunters would otherwise shoot. We have several new to fairly new hunters on our lease, and several have already shot 8 point bucks that are close to AR. Many hunters that I know would shoot the smaller bucks if it weren't for the AR rule. So yes, it does help in growing more mature bucks. Is the system perfect, no. But it is a good system to go by.
I used to get upset about shooters shooting small bucks before the AR rule. If all they saw was a small buck, they would shoot it. This was after we all agreed to a "management program" on our lease. It still bugs me a little that hunters shoot small bucks instead of a doe for meat, but who am I to say what they can or can not shoot. I stopped getting upset years ago after this. If the buck is legal and they want to shoot it, go for it. The small bucks are not for me, but they are meat for the hunter and an exciting kill for the newer hunters, and maybe the younger hunters.