Highly recommend the book "Daemon" by Daniel Suarez on this subject. It's a fiction book that shows the implications of attempted "radical decentralization," and, because it's fiction, what the possible results might be, if one is as intelligent as the book's protagonist. The book's protagonist dies at the beginning of the book, leaving only video-game-level AI programs in his place (ie: "futarchy systems" that correctly estimate human nature, predict human actions, and use those responses to trigger new events using newsfeeds).

You wrote: "if distribution of information is antifragile enough (whatever that means)." -Antifragile is not destroyed by resistance, it grows stronger as a cybernetic system, under resistance. An example is bone strength: if you do not stress your bones, they will grow weak. This is why fat people often have very strong bones: the bones respond to the stress of carrying the weight, by growing stronger. That cybernetic("goal-seeking through feedback and correction") system was selected by evolution(itself a cybernetic system), because systems that didn't make bone-growth responsive to additional weight were unfit for significant reproduction; selected against.

In the past, in evolution, no weakness was universally exploited (not all viruses were airborne, even the airborne ones couldn't travel to every meter of the Earth and infect all possible organisms that were exploitable by their machinery). With the advent of computation, this is no longer inherently true. Human+ (group human and group computer) systems CAN parasitize all who are vulnerable. ...But they need not do so "all at once."

This means that pro-freedom systems need to be smarter than parasitic, predatory(tyrant) human cybernetic systems.

Futarchy is not the most intelligent system. It's an attempt to refuse to perform the harder work of reinstating liberal democracy(which most libertarians lack a plan for accomplishing anyway). Most smart nerds want to find a way to "program freedom" with no political component. This seems like the non-messy, less-risky way of accomplishing their goals.

But there is probably no non-risky, "clean" way of reinstating liberal(libertarian) democracy.