I run a MacBook, a Chromebook and an Ubuntu. Believe me, I know there are alternatives. And in all four platforms, I still have to have a fundamental trust of the base operating system. All of these platforms update.
Like I said if you really think that any updating process is inserting a NSA back door, then stop using the operating system you are concerned about.
"trust me because i say so" is something one tells to kids
"trust microsoft regardless of established PRISM program to steal your private data" is something one tells to retards
most people using microsoft product are either careless or don't have much of a choice, I'm part of the later, I still have plans to neutralize microsoft malicious behavior as much as possible, I'll probably have windows sandboxed without an internet access sooner or later