The downsize of the pre-season forecast has no relationship with harvest of their broods by different sectors, not that this would convince those who already have their mind set on who to blame.
Pre-season run size estimation is based on several factors - spawning escapement count, mortality at spawning stage due to warm water temperature, estimation of out-migrating of smolts, which are AFTER harvest has taken place. These numbers are used in the prediction model, which is developed from historic sockeye return data. Run size numbers are established at different probability level. The higher the probability, the lower the run size estimation is. The number released to the media is usually at the 50% level. For several years now, the actual run size has been lower than the estimation at 50% probability.
A certain of number of smolts go out, you expect a certain number of adults to return. It's not happening, because ocean condition (natural, artificial or both) has not been favourable for pacific salmon at their adult phase.
Anyway, back to the rhetorics instead of focusing on facts and solutions.