Isn't the way that KYC is contrary to decentralization simply that it enables centralized institutional control?  In other words, were there no centralized institution that could use KYC to oppress individuals, then verifiable identity wouldn't be a vector for crimes against humanity.  I note my visceral and innate agreement with your statement that monetizing personhood is a bad idea, which is why I ask for greater clarity.

Also, while 1a1v is susceptible to voters being bamboozled, that isn't a problem of voting per se, but rather the power differential between institutions and individuals.  Denigrating 1a1v because institutions currently abuse individuals is equivalent to denigrating individuals themselves because of that power differential.  

I don't disagree that it's a problem, nor that democracy is presently utterly corrupted by that problem.  I disagree that individual sovereignty is the problem.  This is why I believe that decentralization increasing the power of individuals is the necessary factor on which the prosperity of our posterity depends.

It is my hope that technological advance will eventually enable these specific challenges to be overcome, and doing so will depend on accurately characterizing them in order to effect that advance.  Successfully enabling individuals to understand facts and correctly assess falsehoods is a substantial part of solving the specific problem you note voting suffers, for example.