Flatbush guy- different people chill in different ways. Something you find to be relaxing may not be the same as someone else
I agree with you that its beneficial for yeshiva bochurim to be camp counslers, and the yeshivas should accomadate that. (I had a freind who once actually got permission to leave summer zman early to go be a counsler) but not everyone has the desire to be a counsler in camp and they can do other stuff to relax such as going on trips, BBQing, going to ballgames….