I don't have to look at books, I lived it... Anthias weren't as commonly available as they are now, and the same goes for many wrasses. This is where improved shipping practices and holding facilities have helped quite a bit. Angelfish are still quite sensitive in many cases, but back then, between the two things I just mentioned and how often cyanide was used in their capture. The angels that were really difficult to keep back then are still really difficult to keep...
Bangaii were never difficult, but they were prone to unexplained die-off after importation, which they still are to a lesser degree. There were also some collection factors in there... I would still contend that Anthias, and many of the more sensitive wrasses (Anampses, Macropharyngodon, Cirrihlabrus, etc.) still have mortality rates inside of a year that would make most of us sick, certain species are probably well above 95%+. You brought up orange spotted filefish, sure, we've bred them, but I would bet a large sum of money that nearly 100% of the wild captured orange spotted file-fish are still dead inside of a year. However, I still feel a dedicated hobbysist that knows what they're doing can keep these fish, and they're not really the type of fish I'm talking about, though all the people that buy them and quickly kill them quickly because they don't have a proper set-up are hurting this hobby.
Moorish Idols, Rock Beauties, sweetlips, parrotfish, coralivore butterflies, fish like that are more what I'm talking about here, fish that have very almost zero chance of surviving long term in an overwhelming majority of tanks, yet they're still being imported regularly. If they die in the holding tanks at collection stations and distributors I can assure you they won't continue collecting them at the rate they are now.
Will it make a huge impact on the overall reef if these fish aren't collected, no? Does that mean we should just be ok with them being collected, absolutely not! I don't want people to take this the wrong way, I'm not getting preachy or judgey; I've killed my fair share of fish. However, I'm just tired of many in the hobby being blatant about how little they care about the well being of the animals we keep. It's only going to hurt all of us in the long run and give guys like snorkel Bob more ammunition.