I understand the spirit of these types of threads. It is sad to lose a deposit because of a rule violation. But the energy is focusing on the effect, rather than the cause.
We could dilute the incentive for challenging but in the end that will only threaten the entire registry. It should remain a clear system where a competent challenger can determine validity of a registration request. A clean, clear set of rules must always be the goal.
Instead of trying to change the effect of not following the rules, I believe we could apply effort to the user experience of making the submissions less error prone. Please see this post. If something like this was the experience the OP would have been forced to watch his video and type out the eth address. Empowering the user is key with dapps.