This is an nuanced debate. Suzanne Case is obviously being easier on collectors than needed. But the lobbying interests behind outlawing collecting are also just looking at their bottom line. As a person who studied marine biology, a spear fisherman, and someone who worked in public aquariums I see both sides. I think that the aquarium hobby can actually encourage conservation. It has a greater good and there are many organizations that focus on regulation, certifications, and sustainable practices. I think that a sustainable fishery is easily done. While I would love to see the studies Case describes done I doubt they will be. That is the bigger issue. We are not managing our reefs well. We can't manage our reefs well without more data. This isn't like counting cars, this i about mapping whole ecosystems. 
Sadly all of this is a bit of a distraction from the larger issues affecting our reefs runoff, invasives, ocean warming, overfishing, and destructive tourism.  I hope this passes.