They might, but it depends just how desperate to be right they are. If someone really wants to be right, they can be right. If it doesn't bother them enough to do that then this at least favours a more spread out distribution of people who got it right, vs people who didn't, instead of 90% of players getting it right because they looked it up.
I think it would be more accurate to say that the guide is just a guide, and may not be 100% accurate always. Think of it like a hunting manual. You could follow all the steps perfectly, but that doesn't guarantee that a deer isn't gonna do some weird shit. False flag probably isn't quite the right word for it. I'm sure the writer of the guide isn't intending to mislead readers.
But yeah, no real bad consequences. I dislike choices that have an obvious objectively better choice.