I agree with him that the consequences of loss of anonymity are worse than a loss of anonymity in everyday life. In everyday life if a person sees my credit card number I only have to worry about that person say, whereas conversely on the internet its as if everyone the world over were to see my credit card number.
Assuming we don't have NN i.e. anonymity then the world knows everytime I use my credit card (no privacy). However, they do not know my credit card number because its encrypted (security).
So my thinking hasn't changed much after listening to the google engineers argument, I still think its a much better balance of powers to have everyone have access to everything than only those with the skills or power to acquire it, since I think given an absence of anonymity we would build better software and societal structures to ensure we have security for everyone even though privacy might be gone.