Mike,
An ecosystem is much bigger and more complex than the listed species list. If the jsry is still out on Striper impact on salmon or steelhead smolt, I have no issue with that and am happy to wait and see difinitive research.
But you can't argue that introducing millions of completely alien apex predators into an ecosystem does not have a huge harmful impact to that system. The Striper population consumes huge amounts of biomass, shrimp, fish, scud, and other species. They are voracious feeders and have altered the original delta ecosystem in ways we will never know or understand.
Just because there's no brightline connection between Stripers and predation on other sports fish does not mean that they aren't causing harm all over the food chain and to species we don't care much about. Like I said earlier, "harm" is in the eye of the beholder. If the fishing is good, fishermen see no harm caused.