But 80% sounds far from good enough, that's 20% error rate, unusable in autonomous tasks. Why stop at 80%? If we aim for AGI, it should 100% any benchmark we give.
Are humans 100%?
If they are knowledgeable enough and pay attention, yes. Also, if they are given enough time for the task.
But the idea of automation is to make a lot fewer mistakes than a human, not just to do things faster and worse.