Whoever wrote this is a moron.
Drain's mechanics are simple - break the tether and you're good. Stay around, and risk losing a duel to a stick figure. Fiddlesticks can still lock you down with Terrify to ensure his success, but lowering Tether's range makes sure enemies can actually escape when he fails to scare them good and proper
Yea, because fear really "locks them down" when it makes them run away from you. GG rito.