Perhaps you have never heard this from people who works in politics precisely because they are part of the cozy system they are in and being fed from it.
Perhaps, but like I said, they're extremely jaded people. Nobody in politics has a rose-colored view of democracy, thinking it's a perfect form of governance. But at the same time, you can see the value it has and you can actually see change occur. Democracy isn't broken because getting involved actually has a tremendous affect on the inner workings of politics. Telling people democracy is broken actually works to break it, because people stay home and don't get involved, which is the lifeblood of democracy.