I don't find much that comes from the U.N. as particularly accurate but there are some points in the IRIN article that are true. That there will be no fish by 2050 is not one of them but some countries are doing a lousy job of protecting stocks and will continue to damage their fisheries.
Our Atlantic coast fisheries is managed by both the Federal government and the State's fisheries units with quotas on all of the species that have a commercial market. This management is for both the sport fisheries and commercial fisheries with regulations for each having to do with both size and possession limits. Not perfect but it does help to be paying attention to what is going on.
One mention that was right on was the disposition of by-catch which is usually by just tossing it dead over-board. By-catch is usually characterized by identifying it as species having no commercial value but in reality it is most often under-sized specimens of the target species which decimates various year classes of that species ruining future catches.
Finding a use for by-catch and including them in the total catch possession limit would do a few things. Commercial draggers and netters would be more scrupulous in how they would capture their haul such that more legal sized specimens and less under-sized would be captured. One solution is to prohibit dragging and netting in shallow waters and nursery habitat where under-sized specimens are predominant and force these commercials out to the deeper depths where legal sized specimens predominate.
Small specimens too small to filet could be gutted and beheaded in two simple cuts and the whole body then ground up into a protein mix and formed into a fish cake. I have done this myself with species like croaker and whiting using a meat grinder and then run the grind through an electric mixer for a finer mix. Add some fish cake spices, vacuum seal packaging, and freeze.
Anyway, the title of the article is hyperbole and click bait, which was successful in baiting me into reading it all, and it does raise a concern which all of us on the sport fishing side of things worry about too.