it wasn't just 1 or 2 things. It was a wide arrangement of things. it went from garbage everywhere right through to watching several people fish in the closed area below the hatchery, saw a fist fight over a spot and always lots of yelling and cursing, the way fish are treated there, people keeping illegally caught fish........etc.
I know you can walk and get away from the majority of the stupid stuff which we tried to do but never found any decent spots without hoards of people. I know this same stuff goes on on other streams/rivers as well but at least there you can normally get away from it by doing some hiking.
lots of people love fishing the Capilano, its just not for me. I do however like fishing just outside the mouth of the river but also havent bothered in years when there is better/more enjoyable fishing closer to me