what is potentially dangerous about the sheep trust in Santiago?

"As they set out, he begins to think about the lives of the sheep, and how sheep don't make any decisions. They want only food and water and rely on Santiago for that. Surprised at his feelings of mild resentment toward the animals..." I think Coelho is referring to blindly following without passion or purpose. Santiago spends much time with his sheep but when he gets his dream and thinks of the girl he met a year ago, at the town that is his next destination he is filled with purpose. Sheep trust has no vision, passion or purpose. That's my take on it.