No one cares if people leave ropes on Everest. There's a good reason for that, actually a couple. Number 1 fixed ropes being left is the least of the garbage problem on Everest, and Number 2 Why would anyone complain about ropes being left on Everest when people go up it every year, so its there anyway? You cant just leave a bunch of shit hanging on a mountain when no one is gonna use it or when its a route that no one else is gonna climb it and even if they did they dont want to be using left over gear.