How terrifying is it for the prospect of effective governance that even ranked choice voting is considered too complex for some voters?

Not that disenfranchisement isn’t dangerous - if people who couldn’t even understand ranked choice voting couldn’t vote, it could undermine their ability to upset the applecart when they notice bad changes in their lives and give them even less weight in the fake utility function of the legislature.  But even with that considered, “rank these guys by how much you like them” shouldn’t be that hard.