From https://truecrimesociety.com/2019/08/22/unidentified-and-mos...
> He wasn’t an experienced hiker (wore jeans the first couple weeks, didn’t carry maps/gps/phone, had a tent that was too big, carried a backpack that was over 50 lbs)
Also in the pictures without jeans he was wearing knee support, he might have just had arthritis or something like that.