I agree with the above. when a band is a true "democracy", it rarely works. Nothing gets done. Too many conflicts of opinion. Or when they say they are a democracy, it's all a bit of lie. When someone says, "yes, you're a full member. we want your opinion", it usually means, "I want your opinion, when I agree with it. If I don't care for your opinion, I'm going to ignore you or replace you with someone who agrees with me."
To me the "Benevolent Dictator" model works best. Someone who sets the ground rules clearly, lays out expectations for everyone (including themselves), is honest and plays above board, makes good decisions for the band, addresses issues as they arise, and thinks of everyone's needs not just their own.
Democracies in bands? nothing gets done or it usually flies apart. Musicians are often very impractical, make bad decisions for themselves and others, are ego-driven, difficult and selfish. Works against really getting anything done.