We can pretend that our fish have a much nicer life in our aquariums, but most wild-collected fish don't live to their natural lifespan in our aquariums. This is not intentional, but it is how things often end up. A perfect example occured when the GFCI my aquarium recently died for no apparent reason while I was at work. I lost a kamohara blenny and an orchid dottyback. My only consolation was that they were captive-bred, so that incident didn't directly contribute to the consumption of our reefs (even in small measure).
I do understand the desire to keep wild-collected fish because the captive-bred selection is so limited, but I often hear complaints about the expense of captive-bred fish relative to wild-caught fish. Meanwhile, the same people often spend absurd amounts of money on various tiny frags of trendy corals. Why spend >$100 on a tiny frag of some named coral, but not $90 on a mandarin dragonet every bit as beautiful and interesting? The reality is that our purchasing choices will drive the industry. If the hobby as a community starts paying the premium to preferentially purchase captive-bred fish, more captive-bred fish will become available.
Rather than appreciating the truly mind-numbing variety of corals that are already in the hobby, I've seen many focus on how we can't currently take more from the wild in places like Indonesia. Although I'm sure there are plenty of really interesting and beautiful corals that are not yet widely available in the hobby, I don't think anyone truly needs to buy wild-collected corals to have a beautiful aquarium that is fulfilling to maintain. I would advocate for a system in which only licensed aquaculture facilities can import corals for propagation with some mechanism to prevent resale of the wild coral.
It isn't sufficient to simply assert that the aquarium industry isn't the greatest threat to the reefs, so we shouldn't do anything to mitigate its impact. Traffic accidents aren't the leading cause of death in the US, but we still enact legislation to improve traffic safety.
Finally, I think the gripes about coral importation bans speak to the "collector mentality" of many hobbyists. Unlike Pokemon, the sea creatures we keep are real animals and we don't need to "Catch them all!". I often see people treat corals and fish as consumables or decorations rather than living things. This is the aspect of the hobby I dislike the most.