By subverting privacy Microsoft is a threat to democracy itself.
This is a non sequitur. It is not clear that privacy (specifically privacy of data on Microsoft systems from court order, if that's what you mean) is necessary for democracy. On the other hand, the ability to unmask people who are subverting elections is useful for democracy.
Microsoft has included a keylogger [1] in Windows 10 that's enabled by default. Everything you type from a Windows computer is stored on their systems. They also "may" collect data from your microphone. Every modern Windows computer is essentially a wiretap. And all that is just one warrant away from government agencies. They're collecting more info on you than the KGB could ever dream of.
[1] https://www.pcworld.com/article/2974057/windows/how-to-turn-...