@13:00 fun fact, it was supposed to be designed the other way around. The little wall orb is supposed to inform the enemy team that someone is inside the wall, ie kayn. But its an inadvertent buff. If Riot wanted to balance it, they would make the orb visible only to enemies. But its so OP.
i think most people knew that enemies saw it, but didnt know that you could use it yourself to track enemies. I never thought of that until i started watching karasmai. I dont play kayn though so maybe that's why