Firstly, the examples you gave are dissimilar; GP is pointing out a positive action (choosing a specific browser) while you're emphasizing negative ones (not doing specific things to contribute to Firefox). Secondly, they did not say that the user is to blame for the situation, merely that they are part of the problem, which is trivially true; Google would not be able to do what they are without a large number of people choosing their browser. Thirdly, the way to effect change through fora like this one is to identify what an audience, personally, can do and encouraging them to do that thing. People can choose what browser they use. They cannot meaningfully change Google's behavior.