There is a big difference between "your voice is worthless" and "the final decision is done by people who actually can do the job". Some contributors actually go way beyond the call of duty to help users. But their power isn't unlimited and tradeoffs must be made. Some users want sub-optimal or impractical decisions to be made, often decisions that would screw other users. And once they fail to make things go their way to everyone else's detriment they declare themselves "voiceless" and "powerless". But the truth is, final decisions are always done by people who do stuff, or at least on their behalf. This applies to everything, not only open source projects. Even a paid software house will tell you take a hike if you ask them to do something asinine. If you're lucky. If not, they'll agree at first, and later declare project to be a failure, but will pocket money anyway.