I understand hanging a stand doesn't claim a spot, that public land belongs to all of us. But I also understand common courtesy and consideration. There always were scumbags before but these days people don't even try to hide it. They think it's ok to be a selfish prick. No shame.
Personally I've only ever hunted public by still hunting or from a mobile stand that is carried in & carried out. I'm not a fan of allowing ladder stands or semi-permanent hang-ons, but I respect/recognize that it's a thing and do my best to avoid an area with one present, especially if it's being used. They're hardly ever in a spot I'd want to hunt, anyway.
That said, I was scouting a local spot early this season and was pretty close to a mile from the road when I found some promising sign. It was a transition of thick running along side open woods and a rub line 20yds away & parallel to the transition. I even bumped up some does then a couple bucks 50yds past the doe beds. A little further and right where the bucks had jumped up was where the thicket "J" hooked, and sure enough there was an old broken folding chair with red logging ribbons marking a trail from it out to the old logging road/hiking trail. Somebody seasons before had found a good spot and marked it so that anybody could find it! Probably didn't expect anybody else to be that far back.