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).
Sorry, Opera is dead, and has been for years. It's now also frankenChrome, and none of the old, infinitely customizable options from the actual Opera has remained. The only thing left alive from Opera is the name.
That’s because it’s just re-skinned Chromium: “In 2013, Opera changed its layout engine to Blink, the layout engine of its competitor Google Chrome.”[1]
Are you not concerned with NSA or other five-eyes countries (or Israel, which had unfettered access to raw data from the US[0])? I mean, it's downright dystopian what the Chinese are doing lately in regards to privacy, but what advantage will they have over you as an individual if they have all your data? If I had to (or was able to) choose which government had my data, the NSA or the Chinese government, I might (perhaps naively) choose the Chinese.
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!).