WDFW, especially under Phil, wanted ocean fisheries for salmon. The PS fisheries have been cut back for years. The Tribes, I think, would prefer to not see any fishing in "their" home waters. Also, if the NI share is taken in the summer in the ocean then the Tribal fisheries get to balance that off, per Hoh v. Baldridge. They want the ocean fishing.

Doesn't really matter to them, also, who pays for the hatcheries. It is a government responsibility to mitigate for the ecological damage done by approved activities.