I think the OP has a point. If it’s a small wooded area then there needs to be some sensitivity which if the guys are young they may not be in tune with.
We all need to share these resources and this won’t be helping the reputation on mtbers if it’s making a big mess/hazzard.
Really not sure what you should do apart from keeping up the dialog/ empathise – keep chatting to them then they may be more inclined to listen to what you have to say