In theory, a good idea, they're covering they're arses. In practice, it's a pain. I don't have any CCR certs apart from an IANTD Rebreather cert from 1995 which involved a 15min pool dive and 2hrs of lectures
I've been diving trimix and caves since I bought my rebreather (2nd ever dive on it was in a shallow cave, 3rd ever dive was another at 60m) and three years down the line I've no intention of doing a course in either. As a result, I only dive in places that either don't ask or don't care -- very few UK boats will ever ask for certs, similarly there are very few European caves where certs are checked either.
I'm all for personal responsibility but unfortunately not everyone sees it that way. I've seen enough people though that don't seem to grasp that they (and not their equipment, instructors, insurers, skippers, etc) are responsible for their safety. And unfortunately, the lowest common denominator is what sets the standard for everyone.