I don't agree with this statement. If the system is corrupt (take for example Russia), then the voting system doesn't simply matter. Having absolute access to millions of votes, either digital or on paper, allows any dictator to decide the outcome.

Millions of slips of paper are very easy to burn, and print...

E-votes just make it cheaper/easier to vote in free countries. I don't think we have invented a truly dictator-proof voting system available yet.