It's actually the very first line of their code of conduct.
A few Hacker News users being opposed to this doesn't make Google evil. A lot of people don't care, and I've met some who think it's a good idea.
I can choose where to draw the line. I care more about privacy than most of my friends, so I use a browser that helps that while they use Chrome because that's their choice. Google isn't preventing that from happening, so what they're doing isn't unethical, evil or wrong.
Nowadays all that seem to be less of a priority for Google; now what happens with the shareholder value when a large proportion of the customers again start to value their privacy over convenience ?