It is critical for things like revolutions to occur, but I don't see a reason to believe that revolutions would be necessary in the world that I am describing. Revolutions are necessary when the majority is not being represented, but in an honest world, those collectives would not be elected to begin with. In an honest world, they wouldn't be able to clutch onto power by misdirecting and deceiving the public, and lying to those around them or corrupting those around them, to do their bidding.
I see your point about error and time pressure, but I think it's an unsustainable outcome without deception to carry it. For example, in the scenario where an error or selective pressure leads to being ruled over by a dominating force, it would either represent the majority at that point in time, or it would resolve itself out naturally as clarity is gained. In the world we live in, dominating forces are able to maintain power through misdirection.
Realistically, this is all well and good if we could start from scratch, and if everyone can agree to follow this system, but humanity is too far gone for this to work. Once you have too many psychopaths in the gene pool it's game over for any chance of cooperation over competition. Still, I think it's something we should at least strive for with AI.