That's good, but there's a balance. Many Geocoins are found by non-cachers who may not want to become "validated", but would be willing to put the coin back into play. Remove that option, and there's less of a chance of seeing that coin again.
No what I'm saying is make it impossible for them to partake in any form of caching until they validate their account. That way they do not get their hands on a coin or trackable in the first place until they are validated. That way they provide an email dress and express an actual interest and give others an actual option to contact them.