On my system authors of software can't push updates to me at all. Instead the software is packaged, there is at least some oversight over what is packaged and plenty of user control over packages.
Edit: I'm not implying anything about the capabilities of this preference-updating system; the subject was software updates and who is trusted to deploy them.
You have completely misunderstood what Normandy does.
I cannot understand how anyone could think otherwise of Normandy.
I don’t think it is. That way, you have two authorities checking things over instead of just one.
I trust my mother; it does not mean I trust you, and even less the entire crowd here on HN.
I've stopped using Windows years ago because I didn't trust Microsoft anymore. I'm having minor trust issues with Canonical and Mozilla. I still trust Debian and Arch.
Trust is personal. Hard to get and easy to lose.