I had returned since upgrades allowed me to do what I wanted with Opera, making it a viable option. Now with this news I will be deleting Opera once again.
Yes the world's governments like the US and UK and etc. spy on people, but usually their interests are narrow- they want to gather data about XYZ issue and do a little spying on government or organizations they are paranoid about. Their operations within their country's companies are usually indirect, done in the back room, in the basement, where few can see them, via secret court order.
China on the other hand is deeply involved in the companies its country hosts, and is openly in the board room. Additionally, it's activities are broad and covers everything from spying on governments, organizations, people, to sabotaging governments and organizations, to theft of financial data both personal and corporate, to censorship and everything in between.
If the sale goes through they'll have direct access to Opera, and SurfEasy, the VPN network Opera runs.
I don't trust the world's governments any more than I trust China, but China has proven itself far more enthusiastic when it comes to its surreptitious activities... especially regarding the internet.