I believe this is very true, which is to say that digital voting being 'safe' is really a fallacy. Digital media is, by its very nature, eminently falsifiable. All the way to the substrate and back again.

Voting can be assisted by digital technologies, but should not be impinged upon by them.

Having an auditable trail, with paper, means that when the lights go out, the count can still go on.

Always remember, none of this works without the grid. We have built extremely fragile, frangible society upon a highly specious assumption: that up (or down) always means on ..