Well, Opera is a good browser that no-one uses, so it can't be just that. Tbh UX just isn't Microsofts strong suite (although I really like Windows 10).
On a related note, Microsoft gave the NSA complete backdoor access to Skype years ago[0], not to mention Outlook.com and who knows what else the NSA "needed" to build Prism and other tools, which remote contractors in Bahamas apparently have access to (thanks Snowden!).
[0]: https://www.theguardian.com/world/2013/sep/11/nsa-americans-...
[1]: https://www.theguardian.com/world/2013/jul/11/microsoft-nsa-...