The point is to do pen&paper elections instead. It's the ultimate "open source" solution since everybody who can hold a crayon in the right direction can participate in the verification of the process.
The problem with pen and paper elections is that they rely on honest counting.
It's true that it's easier to manipulate a terrible digital system but that doesn't mean pen and paper is safe.
Block chain technology would offer an open record that couldn't be manipulated, something paper does not.
I mean, I live in Denmark, one of the least corrupt countries in the world and we've had politicians caught changing votes with a pencil and an eraser during the count.
In Minnesota, honest counting is enforced by process. Any ballot handling, whether marked or unmarked, requires the presence of members of at least two different parties. At no point is a single person (or group from just one party) ever left alone with ballots.
We've had two full-on hand recounts at the state level in the past decade or so, and the final results where within a few hundred from the original count in each case, with three million votes cast. Good process solves a lot of problems.