i don't see any reason to take it online. works fine the way it is. i am a poll worker in VA and keeping everything offline keeps it very secure.
Voter registration is kept in databases, which can be hacked. The Mueller Report identified several known cases where hackers accessed voter registration databases, and of course there could've been other cases we don't know about.
So, what can you do with a voter registration database? You can scrape data, to be used in targeted advertising (either convince swing voter to vote for your candidate or convince likely dedicated opposition voters to stay home - Cambridge Analytica's psychometric profiling also helps with this). You can kick someone off the roles, if they have an opposing party affiliation, or perhaps fiddle with their address so their normal voting precinct turns them away.
somehow, the political BS being spread as a losing candidate pretends it was somehow voter fraud, has worked its way into the real world and for whatever reason, some people are actually trying to "secure" something that is already secure. not sure what the end game is, but it almost seems like the idea is to actually make it less secure so lots of doubt and conspiracy theories can be thrown around easier.
We have documented evidence, from multiple states, of attempted and possibly successful tampering with the voting system. It must be taken seriously. You don't wait until your PC gets infected with a virus to install an anti-virus program and you don't wait until your country gets invaded to establish a military. How
much proof do you need of foreign (or domestic) hacking, before you're willing to accept that election security needs to be improved?
Paper voting systems require more work to hack, but they're not as inherently secure as you suggest. Ballots can be forged, ballot boxes can be stuffed, and paper ballots can be prematurely destroyed (didn't this just happen in a House election that had to be re-run?). Machines doing the counts can also be tampered with. Even if they're offline, they're probably not invulnerable to a stuxnet-type hack.
Wouldn't you agree that a voting system which relies on cryptographic techniques to ensure that any tampering with a registration database is detectable and ensures the authenticity of each ballot (while respecting privacy) is a
good thing? Your voting system might be good, but it could probably be better. It's surely not immune from malevolent administrators or workers, even if attacks by such individuals aren't trivial feats. The stronger the system, the more faith we can have in it. Isn't that what we all want?