I've actually posted this on the past seasons challenge (you guys can debate there). But there are a lot of people who forgot something on the plate and survived elimination. It seems like the only time they got eliminated was when they completely whiffed (Angelina who didn't get anything on the plate).
In all times (one was a quickfire, so who cares) that Dawn missed something, there were way worse dishes. I like Jamie, but her dish through conception sounded really bad. Also mixing tahini with cheddar sounds absolutely disgusting.