oppenh3imer
In this case it is true that hydropower is cheap and clean. However, the negative externality of destroying the salmon run is much more than "some fishis" that some Indian tribes cared about.
Aboriginal annual salmon catches have been estimated at over 10 million pounds for year. On top of that, the migration of pacific salmon upriver represents an enormous transfer of nutrients upstream. Salmon are a keystone species and are vitally important for the health of forests.
Unfortunately, the salmon run cannot easily coexist with the dams. Yes, there is value in the hydropower. Yes, it is cheap, clean energy. But it is certainly not without cost. We could be reaping the benefits of one of the largest animal migrations on our planet in a sustainable way. Even disregarding the cultural importance to native peoples there is still enormous economic and ecological value in having a healthy salmon run.
As an extension, there is a utilitarian argument that says a full time driver will benefit substantially more from the minimum wage than a part time driver will suffer.
Regardless, I think appealing to the proportion of drivers is misplaced. It would be unsurprising to me if more than 80% of trips were completed by full time drivers.