Afaik the ballots are complicated because you also have tons of stuff like sheriffs, judges.. on it. And sometimes a confusing ballot is better for one party to suppress the vote of certain populations.

"Your response to this is basically “they’re too dumb to to understand and so don’t matter anyway.”" No, my response is that a pure paper ballot system wont change a thing and would just shift the conspiracy theories to other parts of the system.

The ballots may have more votes, but they aren't more complicated: they're lists of choices next to which a person makes a mark indicating a preference. The "complexity" there is still not a technology problem, it's a people and process problem.