Think about it. Why do people get frustrated when they get a tax increase? What is good for the group might not make the individuals happy.
Also, if they don't make their voice heard, they might get nothing. It is in their right to voice their frustration about the way things are done. Also, it's all nice to try to attract new players, but you don't have to forget the current playerbase is paying your bills. Investing in the future is good, but you have to remember the future won't pay your bills now.
They can also complain about wasted efforts, like the Black Loch.