My Theory is correct it seems, Haki does indeed grant Insight
One Piece World is a Dream-World or a Matrix or Fake World, that's why every Living Being has Haki, it's what allows them to interact with this World, and those with Low Insight (Haki) cannot grasp something that is way way beyond them
In CoC Case, those who are too Weak get Knocked Out, but in Gorosei Case, their Heads Explode (They can't comprehend what They are seeing), which also confirms another Theory of mine that Gorosei & Imu & others (Such as Holy Knights) aren't Zoan Users, They are Beings made of Pure Haki (The Devils themselves). Or as Gorosei calls CDs "Creators of The World"