Considering that one lake produces anywhere from 85-95% of the Skeena sockeye return, the poor runs you mention need all the help they can get.
I also question the positive effect Atlantic salmon have had, seems the commercial boys have a fair amount of say when it comes to fisheries management anywhere on the coast.
Just to give an example, the Skeena Tyee Test Fishery which operates similar to the Albion Test Fishery, had a two day bump in sockeye numbers leading fisheries managers to believe 1,300,000 sockeye we're coming back, which would allow a harvestable surplus and a one day opening was allowed. The numbers then dropped off and the overall estimate is now at 950,000 sockeye which DFO has stated is below the escapement target that allows for commercial fisheries.......oops.
If there is more salmon than DFO deems needed, they will be scooped up by somebody somewhere regardless supply and demand.