On an assembly line everyone needed to be in sync but this generally isn’t true for most office work. You need to be present at the factory to do the work, hasn’t been true for office work for awhile now.
Yet we still operate synchronously. Everyone commutes through traffic/crowded public transport and risk catching the latest novel virus, to arrive at work at the same time. Everyone has lunch at the same time so it’s crowded as heck and we get even more mortal danger.