Heck even Windows 8 started siphoning local desktop searches to its servers. Sure in both the cases it can be turned off but it is sad to see all OSes converging to a point where privacy is no longer a top priority.
Why do we see all OS makers as the enemy? I don't think they're trying all that hard to destroy privacy. What I see happening is that the average person doesn't care about their privacy to begin with. So OS makers give the people what they think they want. This isn't necessarily a bad thing. And beyond that, these features can be turned off. There's such a fine line to walk between things like privacy and convenience, security and ease of use, etc. There are no right answers either. These issues all come down to what each user personally prefers and OS makers are catering to the majority of their users. It's up to each one of us to pick the best OS for what we prefer, make sure we know what can and can't be disabled, and make your voice heard when you see something you don't like. There's never any guarantees you'll get what you want but if enough people speak up...