So, Apple is a government, now?
Apple is a piece of the pipe from you to the internet, just like a carrier. We expect carriers to uphold net neutrality and not censor, so what about phone makers?
If a carrier manipulated search results that passed through it, what would your reaction be?
For example, what if whenever you searched "What is the best carrier?", the carrier you were on inserted itself as the result in a cutsy message? Would that be okay? And where does this stop?
What it boils down to is whether or not you expect Siri to be a gateway to real search results. If not, then it's not a bother. If so, then it is.