I think its kind of sad actually... assuming of course that they don't sell those fish within a matter of days. I mean really... do you think that there is that much of a demand for saltwater fish ANYWHERE to the point they are selling 20+ of every type of fish imaginable (exaggerating of course, but you saw the video)?
If they do in fact sell out everyday, then that might mean that their customers have to keep coming back for more because their fish are dead within the week.
I think it is kind of our responsibility as reef hobbyists to show restraint when it involves so much life taken out of the ocean... one way might be to place a "max size" on fish taken into the fish trade (i.e., a yellow tank must be between 1" to 4"), that way we can leave the older/larger fish that are more difficult to acclimate and are more sexually mature in the ocean to continue breeding to hopefully replenish what we take out.
Just my two cents...