Paper ballots have very boring failure modes and need no explanation or technical support. When you see a system more complex than paper ballots, know that the additions are not there on your behalf .
I disagree. I believe there are people who want results sooner rather than later. The greater the delay, the more annoyed folks become. Recording votes in _both_ paper and electronic form allows for the auditability of paper and the speed of electronic calculations. (Side note: I also believe that hand-counting of ballots can be tedious, and humans performing tedious, repetitive tasks are prone to error. See [1].) [1…
In Denmark all ballots are hand-counted. It takes about 6 hours from polls close to every precinct reporting a preliminary result. Wanting it faster isn't really necessary, other than to feed the 24/7 news machine.