Think at scale. Ignoring the very real human benefits because humans are impatient, a system where a single job run takes an order of magnitude less time to run has a much, much higher throughput overall, with much lower penalty when there are errors. And tired over-worked humans make mistakes. Given the extreme shortage we are under, I'd expect any of the room-sized Roche machines to be running 24/7 if there is no other bottleneck like reagents. The quicker the test, the more tests per hour or per day can be run.