You act as if EVERYBODY you encounter hasn't watched a video or doesn't know about what gear is needed for certain fights. I have news for you, some of us actually DO watch videos and some us actually WONT queue or a fight if we know we can't do it yet.

A required gear check in the duty finder is a side-problem when it is measured up against people who won't even give the encounter a shot because someone in the group is new. That is the behavior that needs to be penalized either BEFORE or WITH a gear requirement.