It's not the Worlds themselves, it's the freaking meta sheep.
Each and every game is the same. Pick what they pick at Worlds and fail at it.
If you take something that's NOT picked in Worlds, people threaten to troll (Happened in 2 games for me already - they actually did troll).
Don't get why people blindly copy the pros, God... every Worlds it's the same thing, but worse.