1) In real life, anyone can use the people's mic. If you implement it with a centralized conference call, only the "leader" can use it. This is supposed to be a leaderless movement.
2) In real life, GAs don't vote, they operate with complex consensus processes, and there are several different kinds out there. You can't summarize them all with a simple yes/no.
I like the general idea of this app, but I truly hope the authors spend some time with a GA and adapt it to the people's real needs, rather than pushing their own model.