For the voter that may not be a ton of work. I imagine to count all those votes you need technology and not just the election workers at each station? Here we have kept it dead simple. They’re all just hand counted over a few hours.

No, they count them by hand. Each issue/office has a separate ballot paper, so it can be done in parallel with sufficient number of counting personnel. It takes a couple of hours, sometimes more in big districts in cities but usually they are done by 6pm at the latest after starting at noon.