Maybe, or maybe not. Look at India's for a different outcome. They had many problems related to paper:p printing enough voting forms, transporting them on village roads, storing them until election day in villages where there might or might not be a door with a lock, etc. I wrote this during a HN thread long ago, IIRC: https://rant.gulbrandsen.priv.no/indian-election-machines The MSB is perhaps that the machine is very simple and the counting happens at once, observed by people who have a good idea of whether the result is correct.

It seems to me that the Americans have set themselves up to lose by having too complex elections, where people are asked to cast a vote for dozens of things at the same time. That's going to be a strain for both the vote counters and the voters, and paper won't make the strain go away.