I guess the "right" answer in my mind would be "yes" ... IF it can be independently proven that the sheer number of hobbyists are causing irreversible damage to
significant swaths of coral reefs.
I don't have data or perspective on how big the industry is in the U.S. or globally, but if you can buy LR, Dwarf Angels, Tube Worms, Urchins, and Cleaner Shrimp from big box stores now, I'd wager the entire scene across the world is "pretty damn big". How many people do you think are walking into those places, buying a 10 gallon tank with an incandescent hood, HOB sponge filter, heater, bag of sand, bag of salt, bottle of dechlorinator, an air pump (for that cool, animated pirateship decoration), and then add a clownfish, and juvi yellow & hippo tangs the same day? ( <---- Not necessarily rhetorical - if you have an idea, I'd seriously like to hear an answer!)
Posts/sites like this do not help things:
http://www.ehow.com/how_5796_set-saltwater-aquarium.html
since it makes it appear very, very easy to start a saltwater tank -- in this article it does not even mention a skimmer until after the step where the fish are placed in the tank (making it appear as an unnecessary accessory)... and no mention of LR anywhere... This is the 4th most popular link under the "how to set up a saltwater aquarium" search, BTW.... And BY FAR the easiest to read for anyone not in the hobby.
But also consider this: if over-popularity and the casual hobbyists brings is a problem, then the solution can be seen as an opportunity - and I think there are some who have seized it already. Companies like ORA are able to mass-produce some of the most popular livestock at a rate that hopefully keeps up with demand and allows it to price itself below wild-caught livestock. What inevitably happens to the majority of that purchased livestock is probably a sad tale in a lot of the cases, but at least it's not wild-caught live stock... and that might be all the difference when it comes to banning or greatly restricting the hobby.
... Then again, I am woefully ignorant about the whole industry (and ORA's impact on it), so I could be very off-base about a few points here.