...why do I need to have dreams trying to convince me that I'm "wrong"?
It's not that you *need* to have these dreams. I think the suggestion is that the if you chose to not use the powers, then the tadpole needs to try to convince you. It's not about your character's needs. It's about the needs of the tadpole.
Personally, I don't think these extra "convincing" dreams are necessary. There's other development I'd like to see, I guess don't want the dreams to get overwhelming in the sheer number of them.
But I think the purpose behind the poster's suggestion is clear.
