Hearing Lauren say that he's right does boost Strange's spirits a little. But he's got plenty of condescending know-it-all energy left in him so this conversation is far from over.

"None of us planned to meet with the fae for this encounter," Strange points out. If the fae caught them by surprise once, then they can catch them by surprise again. "As long as you're in the carnival, the more you know about the fae, the better. What matters is that you keep yourself and Susan safe and it would be easier to do that with information. Who the fae are, what they can do, any particular personality defects, and so on."

What Strange is trying to say is 'brush up on your npcs, Lauren.'