I am all about respecting other hunters while out in the woods. I'm 32 so I'm not so young but alot younger than 50. When I go to my favorite spots on the WMA I hunt on I hope that no one else is in the area but if someone is parked there then I try to be quieter and if I see someone I ask where they are hunting and I go the other way.
I don't think the problem you are having is an age issue, I think its a jerk issue and they can be dealt with. I also hunt on private land and am the only one that hunts it. 40 acres in the mountain,3/4 wood and 1/4 open, the last time I was there I found a 4 wheeler trail coming from the neighbors land over the mountain and several empty shotgun shells laying around, this guy is in his late 50's and thinks he owns the place, I am actually going to be there early in the morning and I hope to catch him riding his 4 wheeler on the land, he will be given a choice, walk back to his place and stay off mine and I will have a 4 wheeler or he will have one hell of a time pushing a 4 wheeler over the mountain with four flat tires