My issue with it is that it's not only unhelpful in most situations, it's actually harmful. It tends to give the people who use it the false sense that the day number matters somehow, and if they can't do a thing it tells them to do on day 17, then they're screwed. They stop paying attention to what's going on in the game and start just blindly clicking the response that it tells them to give, so when the wheels eventually fall off at some point they have zero idea what they're supposed to do. "I need a finger bone. Why do I need it? No idea, but the walkthrough says I'm supposed to have it."
When I first discovered this game and started following the thread, I remember Belle made a post stating that the walkthrough encouraged a type of play that was not intended, and would make the game a lesser experience. I took that advice to heart and am very glad that I did, I just wish others would do the same.