I'm guessing he means "Treasure Hunting" specifically as pushing that button on your finder, ie that you can't get it by mining ores any more than you can get it by plucking a chicken.
Well sure hope someone will loot something valuable on Ark eventually, so gl to all of you who search for UL, for me i would just like to get one global on Oro, done 6k of them on stage 5 and still not even one, so ........., personally i dont even dare to expect something with real value will be there till the end of stage 5 then i just have to see what to do next
