Notice how he ignores completely the pink hatchery releases? If the AK fish are following the lower 48 the causes are many; there is no one single cause that if we stopped doing that the fish would miraculously recover.

Stopping fishing will help a lot, because dead fish (generally-except in hatcheries) spawn. But if the problem is also food supply (overfishing-eve bycatch and/or hatcheries) then that has to stop so they'll have something to eat.

I believe that there are folks out there who put together a comprehensive explanation as to what is occurring and what needs to be done. It is simply too widespread and too economically devastating to be done. And then we add in the climate change/warming of the oceans.

Best hope is that Chinook make it into the Arctic and no fishing fleets follow.