I believe that if this site enumerated all the ways that you can maliciously use computerized vs. paper voting systems, we would show a hell of a lot more benefits to a manipulator than a voter.
I think if you bring up Occam's Razor you also need:
1. Somebody gets to make money selling crap to the government
2. Somebody in government thinks it'll mean cost-savings
Given that the current party with federal power is the Republican party, I would argue there is no better time for them to pass as many vote-restriction laws as possible. Vote restrictions typically target the poor and minorities, who typically are Democrat party voters. The wikipedia article I linked is actually a remarkably good overview of the recent history of this issue in the USA.
[0] https://www.washingtonpost.com/news/wonk/wp/2018/03/28/how-m...
[1] https://www.brennancenter.org/new-voting-restrictions-americ...
[2] https://www.npr.org/2017/03/09/519500312/state-republicans-p...
[3] https://www.rollingstone.com/politics/politics-news/how-the-...
[4] https://en.wikipedia.org/wiki/Voter_suppression_in_the_Unite...