Yeah, it bothers me so much. Lae'zel is the first companion we meet, she objectively knows more about mindflayers than anyone else in the party, and more than most people we consult about them. She tells us over and over that this is our best chance. In a sea of maybes and supposed experts being befuddled, she presents clear, reliable knowledge consistently. Sure, there's a check where we can learn she isn't sure what the cure is, but still, her people clearly know their mindflayer business. Plus to me at least it seemed unlikely that they would have lied to her about it. Gith are clearly trained to be fanatical and it's already clear she's willing to die rather than turn, so why lie about there being a cure? When I first played the game, I went straight to the patrol and lost every time. I gave up and am not even going to try until I'm able to level the party more.
What's more though, once we know that the fight is too difficult for us, it's not even an interesting dilemma. We just have to not confront them. Lae'zel doesn't mind us going a different route, there's no risk of her leaving, nothing. Once the shock is gone, there's nothing left but a frustrating combat.
