No, the "Nothing to hide" mentality is completely wrong. Privacy is privacy and you have a right to it. If you are in the USA, it's called the 4th Amendment.
http://www.businessinsider.com/fbi-director-covers-webcam-2016-9
The former head of the FBI said, "Smarter people than I cover their webcams with a piece of tape." and guess what? I felt extremely vindicated when I read that, because I even cover up my phone cams. I don't do smart TVs and I refuse to be involved with the Internet of Things.
In the state where I live, recording audio without the other persons knowledge and permission is a crime.
one more question: WHO defines 'Surveillance' as "watch from above"? It means to watch closely, scrutinize.
Anonymity isn't the issue, it's Privacy. And you can maintain anonymity at a high level, hackers do it all the time, unless every one of them is a state agent.