I guarantee they are turned on for pro streams. No coach is gonna be like, "Yea don't use that thing that makes diving/last hitting easier and shows you exactly how close you can get to towers while invis". Even though it's not necessary for most players, it'll still help. I just think it looks like pure shit and just reminds me of the shittier more casual games.
It's like if you took the sport of 10-pin bowling and put up those bumper rails on the sides of the lanes for someone who was already a pro bowler. I'm sure they are already well aware of how to avoid rolling the balls into the gutters so they can easily avoid hitting the rails, but I'm sure they'd still be annoyed to see the little retarded rails meant for children sitting on the sides of the lane the entire damn time. I don't know shit about bowling so it's probably a bad reference.
Obviously it's the right thing to do to expand the player base and maximize profits, but seriously you don't have to tard-proof every single little thing.