I generally keep to my self, but will offer help if I thank I can be of assistance without being coming across as condescending.
I don't generally go to uncontrolled public ranges, not a big fan. I understand buckhorn's attitude toward them, I have had someone shoot during a ceasefire while I was downrange at one once. I would rather have an actual range officer keeping an eye out for idiots.
My last range trip, a early 20s guy and his dad were three benches down, shooting a new looking scoped Savage at 100 yards. I didn't really pay attention at first, but after I was there about an hour, I was waiting for the next target change and pointed my spotting scope at their target to see how the Savage was shooting, and it was clean, no holes at all. I kind of listened in, and it was clear they were struggling, and had no idea where the rifle was shooting, or how to sort it out.
At the next break, I asked how it was shooting, they said they were trying to sight it in, and were having trouble. I asked if thy tried removing the bolt and doing a rough bore sighting, and he had no idea how to do that. They were using a nice front rest, but no rear bag, so offered my sandbags, and showed them how to do a rough boresight, and their next shot was on paper. As far as the scope was off, they would have never got on paper without help from someone.
We have probably all run into "That Guy" at the range. Don't be "That Guy". If you have never run into "That Guy" you are either really lucky, or it is you.